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INSTRUCTION
MANUAL
FOR
STAINLESS
STEEL

CALIBERS
.357, .38 SPECIAL
9mm, .22 & .32

RUGER® SP101®
DOUBLE ACTION REVOLVER

READ THE INSTRUCTIONS AND
WARNINGS IN THIS MANUAL CAREFULLY
BEFORE USING THIS FIREARM
For Product Service on This Model Please Call:
(603) 865-2442 (See p. 25)

STURM, RUGER & Company, Inc.
Southport, Connecticut 06890 U.S.A.
THIS INSTRUCTION MANUAL SHOULD ALWAYS ACCOMPANY THIS FIREARM AND BE
TRANSFERRED WITH IT UPON CHANGE OF OWNERSHIP, OR WHEN THE FIREARM IS LOANED OR
PRESENTED TO ANOTHER PERSON.

KW/9-02 C
R12

State-By-State Warnings
Certain states require by law that their own specified warning
notices in larger-than-normal type be conspicuously included by
the manufacturer, distributor, or retail dealer with firearms sold
in that state. Sturm, Ruger sells its products in compliance with
applicable laws and regulations. Because our products may be
sold in these states, we include the following:

California:

WARNING

ADVERTENCIA
“A los niños los atraen las armas
de fuego y las pueden hacer
funcionar. Ellos pueden causarses
lesions graves y la muerte. Evite
que los niños tengan accesso a las
armas de fuego guardándolas
siempre con llave y descargadas
cuando no las esté utilizando. Si
usted tiene un arma de fuego
cargada en un lugar en que un
niño tiene acceso a ella y la usa
indebidamente, le pueden dar una
multa o enviarlo a la carcel.”

“Children are attracted to and
can operate firearms that can
cause severe injuries or death.
Prevent child access by always
keeping guns locked away and
unloaded when not in use. If you
keep a loaded firearm where a
child obtains and improperly uses
it, you can be fined or sent to
prison.”

Connecticut:
“UNLAWFUL STORAGE OF A LOADED FIREARM MAY
RESULT IN IMPRISONMENT OR FINE.”

Florida:
“IT IS UNLAWFUL, AND PUNISHABLE BY
IMPRISONMENT AND FINE, FOR ANY ADULT TO
STORE OR LEAVE A FIREARM IN ANY PLACE WITHIN
THE REACH OR EASY ACCESS OF A MINOR UNDER 18
YEARS OF AGE OR TO KNOWINGLY SELL OR
OTHERWISE TRANSFER OWNERSHIP OR POSSESSION
OF A FIREARM TO A MINOR OR A PERSON OF
UNSOUND MIND.”
3

Maine:
“ENDANGERING THE WELFARE OF A CHILD IS A
CRIME. IF YOU LEAVE A FIREARM AND AMMUNITION
WITHIN EASY ACCESS OF A CHILD, YOU MAY BE
SUBJECT TO FINE, IMPRISONMENT OR BOTH. KEEP
FIREARMS AND AMMUNITION SEPARATE. KEEP
FIREARMS AND AMMUNITION LOCKED UP. USE
TRIGGER LOCKS.”

Maryland:
“WARNING: Children can operate firearms which may cause
death or serious injury. It is a crime to store or leave a loaded
firearm in any location where an individual knew or should
have known that an unsupervised minor would gain access to
the firearm. Store your firearm responsibly!”

Massachusetts:
“WARNING FROM THE MASSACHUSETTS ATTORNEY
GENERAL: This handgun is not equipped with a device that
fully blocks use by unauthorized users. More than 200,000
firearms like this one are stolen from their owners every year
in the United States. In addition, there are more than a
thousand suicides each year by younger children and
teenagers who get access to firearms. Hundreds more die from
accidental discharge. It is likely that many more children
sustain serious wounds, or inflict such wounds accidentally on
others. In order to limit the chance of such misuse, it is
imperative that you keep this weapon locked in a secure place
and take other steps necessary to limit the possibility of theft
or accident. Failure to take reasonable preventive steps may
result in innocent lives being lost, and in some circumstances
may result in your liability for these deaths.”
“IT IS UNLAWFUL TO STORE OR KEEP A FIREARM,
RIFLE, SHOTGUN OR MACHINE GUN IN ANY PLACE
UNLESS THAT WEAPON IS EQUIPPED WITH A
TAMPER-RESISTANT SAFETY DEVICE OR IS STORED
OR KEPT IN A SECURELY LOCKED CONTAINER.”
4

New Jersey:
“IT IS A CRIMINAL OFFENSE TO LEAVE A LOADED
FIREARM WITHIN EASY ACCESS OF A MINOR.”

New York City:
“THE USE OF A LOCKING DEVICE OR SAFETY LOCK IS
ONLY ONE ASPECT OF RESPONSIBLE WEAPONS
STORAGE. ALL WEAPONS SHOULD BE STORED
UNLOADED AND LOCKED IN A LOCATION THAT IS
BOTH SEPARATE FROM THEIR AMMUNITION AND
INACCESSIBLE TO CHILDREN AND ANY OTHER
UNAUTHORIZED PERSONS.”

North Carolina:
“IT IS UNLAWFUL TO STORE OR LEAVE A FIREARM
THAT CAN BE DISCHARGED IN A MANNER THAT A
REASONABLE PERSON SHOULD KNOW IS ACCESSIBLE
TO A MINOR.”

Texas:
“IT IS UNLAWFUL TO STORE, TRANSPORT, OR
ABANDON AN UNSECURED FIREARM IN A PLACE
WHERE CHILDREN ARE LIKELY TO BE AND CAN
OBTAIN ACCESS TO THE FIREARM.”

Wisconsin:
“IF YOU LEAVE A LOADED FIREARM WITHIN THE
REACH OR EASY ACCESS OF A CHILD YOU MAY BE
FINED OR IMPRISONED OR BOTH IF THE CHILD
IMPROPERLY DISCHARGES, POSSESSES, OR EXHIBITS
THE FIREARM.”
* * * * * * * * * * * * * * * * * * * * * *
Please check with your licensed retailer or state police for
additional warnings which may be required by local law or
regulation. Such regulations change constantly, and local
authorities are in the best position to advise you on such legal
matters.
5

WHY ARE WE INCLUDING A FIRED CARTRIDGE CASE
WITH EVERY RUGER PISTOL AND REVOLVER?
Certain states and jurisdictions now require that all newly manufactured pistols
and revolvers must be accompanied by a cartridge case, which has been test fired
from that gun at the factory. The case must be placed in a sealed container
bearing certain information concerning this test cartridge.
At the time of retail sale in those jurisdictions, firearms dealers must forward
such test cartridge to a designated destination such as their State Police
Laboratory. As independent Ruger Distributors have nationwide markets without
territorial restrictions, we have decided to include a fired cartridge case with all
new Ruger pistols and revolvers, to minimize the possibility of inadvertent noncompliance with these laws.
Retail customers located in other states, where laws or regulations do not require
the dealer to so act, may be assured that the fired cartridge case they receive with
the firearm at the time of retail purchase is proof that your new Ruger firearm
has undergone our normal test firing procedures during manufacture.

WARNING – LOCKING DEVICES
This firearm was originally sold
with a key-operated locking
device. While it can help provide
secure storage for your unloaded
firearm, any locking device can
fail. All guns are designed to fire
if they are loaded and the trigger
is pulled. Therefore, never install
the locking device inside the
trigger guard or in any way that
it can possibly pull the trigger!
Do not leave the keys in the lock.

DO NOT INSTALL
INSIDE TRIGGER GUARD

The ultimate responsibility for
secure storage of any firearm
must depend upon its owner and
his or her individual
circumstances. Guns should be
securely stored unloaded, in a
secure location, separate from
their ammunition.
See “Storage Warning”, page 23.

NEVER INSTALL
LOCKING DEVICE
INSIDE TRIGGER GUARD

INSTALL LOCK
AS SHOWN HERE
6

FIREARMS SAFETY-YOUR RESPONSIBILITY
SAFETY MUST BE THE FIRST AND CONSTANT
CONSIDERATION OF EVERY PERSON WHO
HANDLES FIREARMS AND AMMUNITION.
This Instruction Manual is designed to assist you in learning how to use and care
for your RUGER® SP101® revolver properly. Please contact us if you have
any questions about it.
Only when you are certain you fully understand the Manual and can properly
carry out its instructions should you practice loading, unloading, etc. with live
ammunition. If you have any doubts about your ability to handle or use a
particular type of gun safely, then you should seek supervised instruction. Such
personalized instruction is often available from gun dealers, gun clubs or police
departments. If none of these sources can help you, write to the National Rifle
Association, 11250 Waples Mill Road, Fairfax, VA 22030-7400. They will put you
in touch with a source of personalized instruction.
The person possessing a gun has a full-time job. You cannot guess; you cannot
forget. You must know how to use your firearm safely. Do not use any firearm
without having a complete understanding of its particular characteristics and
safe use. Remember: There is no such thing as a foolproof gun.

TABLE OF CONTENTS
Page
State-By-State Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
General Information and Mechanical Characteristics . . . . . . . . . . . . . . . . . . . . . 8
Ammunition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Operation of “Double-Action Only” Revolvers . . . . . . . . . . . . . . . . . . . . . . . . . 12
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
To Load and Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
To Uncock (Decock) The Revolver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
To Unload or Eject Cartridge Cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Special Instructions for 9 mm Clips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Care of Stainless Steel Revolvers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Sights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Sight Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Service and Parts Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Parts Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
The Basic Rules of Safe Firearms Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Ruger®, “SP101”®,and the Sturm, Ruger logo are registered U.S. trademarks.

7

WARNINGS OF GREAT IMPORTANCE ARE
FOUND ON THE FOLLOWING PAGES:
Locking Devices
Alterations
Lead Exposure
Ammunition
Double-Action Only
Handling

6
8
10
11
12
13

Cylinder Interlock
Firing
Disassembly
Lubrication
Storage
Parts Purchasers

14
16
19
22
23
26

OTHER CAUTIONS AND WARNINGS APPEAR
THROUGHOUT THE MANUAL.
FIREARMS ARE DANGEROUS WEAPONS–
READ THE INSTRUCTIONS AND WARNINGS IN THIS
MANUAL THOROUGHLY AND CAREFULLY BEFORE USING.

WARNING–ALTERATIONS
This product was designed to
function properly in its original
condition. Alterations can make it
unsafe. Do not alter any part or add
or substitute parts or accessories
not made by Sturm, Ruger & Co. Inc.

DO NOT ALTER ANY GUN

GENERAL INFORMATION
AND MECHANICAL CHARACTERISTICS
The RUGER® SP101® revolver is a double-action firearm which embodies
many features found in the famous RUGER® GP100® and RUGER®
SUPER REDHAWK® revolvers. The unique frame extension permits the use
of full wrap-around style grips of any desired configuration. This feature reduces
overall weight and contributes to a desirable muzzle of heaviness. The crane and
cylinder assembly of the SP101 revolver lock directly into the frame, both at the
rear of the cylinder and at the front of the crane. The ejector serves only as an
ejector – it does not rotate with the cylinder. All of this mechanism is readily

8

removable without tools and dismantles, along with the cylinder/crane group,
into a small number of subassemblies for inspection and cleaning (See Figure 1).
The internal parts are installed either through the top or bottom of the gripframe; therefore, no side plate is needed. The resulting double solid frame
contributes greatly to the extraordinary strength and reliability of these
revolvers.
The RUGER® SP101® revolver has a transfer bar which is connected directly
to the trigger. The transfer-bar safety system provides that the hammer blow can
be transmitted to the firing pin only when the trigger is pulled all the way to the
rear. This is a positive internal safety feature.

NOMENCLATURE
Figure 1.
FRONT SIGHT

BARREL

FRAME

HAMMER
CRANE LATCH

MUZZLE

HAMMER PIVOT
ASSEMBLY

EJECTOR ROD
CYLINDER

GRIP SCREW

TRIGGER GUARD

PISTOL GRIP
INSERT

TRIGGER

Figure 2.
HAMMER STRUT, MAINSPRING,
& MAINSPRING SEAT

HAMMER ASSEMBLY

FRONT SIGHT

HAMMER PIVOT ASSEMBLY
GRIP SCREW

PISTOL GRIP

CYLINDER/CRANE
ASSEMBLY

DISASSEMBLY PIN

GRIP PANEL
LOCATOR

TRIGGER GUARD
ASSEMBLY

Despite their many highly desirable features, Ruger revolvers–as with all
firearms–must at all times be handled with strict attention to correct safety
practices, and be inspected frequently to assure the gun is working properly.

9

WARNING – LEAD EXPOSURE
Discharging firearms in poorly ventilated
areas, cleaning firearms, or handling
ammunition may result in exposure to
lead and other substances known to the
state of California to cause birth defects,
reproductive harm, and other serious
physical injury. Have adequate ventilation
at all times. Wash hands thoroughly after
exposure.

SHOOTING OR CLEANING GUNS
MAY EXPOSE YOU TO LEAD

AMMUNITION
RUGER® SP101® revolvers are designed for use with cartridges of the
correct caliber which are manufactured in accordance with the U.S. Industry
Standards. Be certain to use proper cartridges of the correct caliber. See page 21
(“Care and Cleaning”) for important information on chamber cleaning.
Please refer to the Notes below regarding proper ammunition for the available
SP101 calibers.
Notes on Caliber .38 Special: .38 Special caliber revolvers are designed
specifically for modern higher-powered factory loaded cartridges, including .38
Special and .38 Special + P ammunition.
Notes on .357 Magnum caliber: This revolver is designed to fire factory loaded
.357 Magnum, .38 Special and .38 Special + P ammunition.
Special Ammunition Notice for .357 Revolvers marked “125 GR. BULLET”
only: Some revolvers have slightly shorter cylinders and frames and are
therefore limited to the use of .357 Magnum ammunition with a maximum
bullet weight of 125 grains and an overall loaded cartridge length of not
more than 1.57 inches. These revolvers are roll-marked with “125
GR.BULLET” on the right side of the barrel.
Ammunition containing heavier bullets or of a longer length may not permit
the cylinder to close or rotate! You may not even be able to fire the revolver if
you try to use longer or heavier bullets. Be sure the ammunition you wish to
use in the revolver will chamber freely, and will permit the cylinder to open,
close and rotate readily. Do not assume any ammunition will work without
checking it first.
All other .357 SP101 revolvers can use all standard factory .357 loads.

10

Notes on 9mm Parabellum Revolvers: This model is chambered for the 9mm
Parabellum (Luger) cartridge. A package of 9mm clips are supplied with the
revolver and are required to allow proper ejection of the 9mm rimless cases. See
SPECIAL INSTRUCTIONS FOR 9mm CLIPS, p. 14. Do not use any other 9mm
cartridges (9mm Short, 9mm Bergmann, etc.).
Because 9mm cartridges are manufactured worldwide for use in pistols,
revolvers, and submachine guns, it is possible to encounter cartridges which,
when fired, develop pierced primers. If this occurs, discontinue the use of the
particular brand or type of ammunition. The possibility of a pierced primer is
another complete reason why a shooter should always wear protective glasses to
shield his eyes. Use only metal jacketed bullets in 9mm revolvers. When a lead
bullet is fired, its base expands and a ring of lead is shaved off and deposited in
the shoulder area of the chamber. A build-up of lead rings can prevent proper
chambering of cartridges because 9mm cartridge mouths seat on the chamber
shoulders.
Notes on .22 Caliber Long Rifle: The .22 cal. model is a six-shot double action
revolver chambered for the .22 Long Rifle cartridge. The .22 Short, .22 Long and
.22 shot cartridges can also be fired from this model. It should be noted that
extensive use of the .22 Short cartridge can cause a “ring” to be cut in each
cylinder chamber which may interfere with the extraction of Long and Long Rifle
Cartridges.
Notes on Caliber .32 H & R Magnum: This six-shot SP101 chambered for the
Caliber .32 H & R Magnum cartridge will also chamber the .32 S & W cartridge
and the .32 S & W Long cartridge. The use of other than .32 H & R Magnum
cartridges, may, in some loadings, result in unsatisfactory accuracy.
For reasons noted above, revolver chambers should be cleaned regularly and
chamber cleaning should be the first corrective action when cartridges of the
correct caliber and type do not chamber properly.

WARNING – AMMUNITION
Death, serious injury, and damage
can result from the use of wrong
ammunition, bore obstructions,
powder overloads, or incorrect
cartridge components. Always wear
shooting glasses and hearing
protectors.

IMPROPER AMMUNITION
DESTROYS GUNS

11

AMMUNITION (CARTRIDGES) NOTICE
WE SPECIFICALLY DISCLAIM RESPONSIBILITY FOR
ANY DAMAGE OR INJURY WHATSOEVER OCCURRING IN
CONNECTION WITH, OR AS THE RESULT OF, THE USE IN
THE SP101 REVOLVER OF FAULTY, OR NON-STANDARD, OR
“RE-MANUFACTURED”, OR HAND LOADED (RELOADED)
AMMUNITION, OR OF CARTRIDGES OTHER THAN THOSE
FOR WHICH THE FIREARM WAS ORIGINALLY CHAMBERED.

OPERATION OF
“DOUBLE-ACTION ONLY “ REVOLVERS
(This section applied only to “Double-Action Only” revolvers, identified by their
lack of a hammer spur)
The model you have selected is equipped with a special trigger mechanism that
permits only “double-action” firing. The hammer cannot be manually cocked,
since there is no full cock notch or hammer spur. The revolver can only be fired
by a relatively long (“double-action”) pull of the trigger which draws the hammer
rearward and then releases it to fire every shot.
It is important to note that the mechanism of the gun will not permit another
shot to be fired unless the trigger is first fully released and then pulled again.
The revolver has an internal transfer bar that will not allow the hammer to
contact the firing pin and fire the gun until the operator completely pulls the
trigger.

WARNING –DOUBLE-ACTION ONLY
Do not attempt to manually cock
the hammer! Since there is no fullcock notch, the hammer will fall
forward when released, and if finger
pressure is applied to the trigger,
the revolver can fire. The automatic
safeties that prevent firing if the
hammer falls are deactivated if the
trigger is pulled. Do not touch the
trigger unless you intend to shoot
the revolver!

DO NOT COCK HAMMER
12

CAUTION:

When firing the double-action only revolver,
be sure that the trigger is released completely to its fully
forward position before attempting to pull the trigger for a
subsequent shot. If the trigger finger is allowed to interfere with the
full recovery of the trigger (preventing it from moving through about
the last one-eighth inch of its forward movement), pulling the trigger
will not fire the revolver. The trigger must be fully released after each
shot is fired. This characteristic is found on all modern double-action
revolvers and “double-action only” pistols.

HANDLING
CARRYING: The SP101 revolver can be carried with all chambers loaded. When
the hammer and trigger are fully forward, the transfer-bar is lowered out of its
firing position and the hammer rests directly on the frame.

WARNING – HANDLING
If the trigger is held to the rear, the gun
can fire if the hammer strikes the
transfer bar. Note that it need not be a
deliberate effort to pull the trigger. Any
situation where the trigger attains its
rearward position and permits the
transfer bar to be interposed between the
hammer and the firing pin can cause the
cartridge under the firing pin to
discharge.
NEVER DROP OR STRIKE THE
REVOLVER – COCKED OR UNCOCKED
CARRY AND HANDLE THE REVOLVER
IN SUCH A MANNER THAT THE
HAMMER AND TRIGGER WILL NOT BE
STRUCK.

NEVER CARRY ANY
REVOLVER WITH THE
HAMMER COCKED OR THE
TRIGGER HELD TO THE REAR

DRY-FIRING
“Dry Firing” is practicing the trigger pull of the empty revolver for practice and
familiarity. The SP101 revolver can be dry-fired without damage to the firing pin
or internal components.
Be sure that the revolver is unloaded before handling. Be sure of your bullet
stop, even when dry-firing for practice. Do not dry-fire the revolver with the
plastic ‘safety disc’ on the cylinder.

13

TO LOAD AND FIRE
Be sure the revolver is pointed in a safe direction and is
never cocked while loading.
1. Press the crane latch and guide cylinder out of frame to the left to its loading
position (See Figure 3, below).

FIGURE 3
LOADING THE REVOLVER.

2. Insert cartridges and gently close cylinder, making sure it is securely latched.
Do not “flip” the cylinder open or shut.

➧

WARNING – CYLINDER INTERLOCK
When correctly operated, the cylinder
cannot be opened when the hammer is
cocked, and the hammer/trigger
mechanism is not able to be operated
until the cylinder is locked shut.
However, this safety interlock can be
intentionally defeated if the crane latch is
depressed and the hammer is then
cocked while the cylinder is opened. If
the cylinder is then shut when the
hammer is cocked, the hammer may fall
and the gun may fire.

NEVER CLOSE OR OPEN
THE CYLINDER WHILE
THE HAMMER IS COCKED
3. The revolver is now ready to fire, either “double-action” by pulling the trigger
through its complete arc for each shot, or “single-action” by cocking the
hammer and then pulling the trigger for each shot. The trigger pull is
somewhat shorter and lighter when the revolver is fired single action, and
this is the preferred mode for precise shots or target shooting.

14

4. DO NOT TOUCH THE TRIGGER UNTIL YOU ARE READY TO FIRE.

CAUTION–DOUBLE ACTION FIRING

When firing in the double action
mode, be sure that the trigger is
released completely to its fully
forward position before pulling the
trigger for a subsequent shot. If
the trigger finger is allowed to
interfere with the full recovery of
the trigger (preventing it from
moving thru about the last oneeighth inch of its forward
movement), the trigger cannot be
pulled again for another discharge.
The trigger must be fully released
after each shot is fired. This
characteristic is found in all
modern double-action revolvers
and “double-action only” pistols.

FULLY RELEASE
TRIGGER
BETWEEN SHOTS
5. DO NOT HOLD THE REVOLVER BY THE BARREL OR CYLINDER WHEN
FIRING.

15

WARNING–FIRING
When firing the SP101 revolver, be sure
all persons are a safe distance to the rear
of the shooter. When fired, all revolvers
discharge hot gas and particles of lead,
powder grains, or lubricant through the
clearance gap between the cylinder and
the rear of the barrel at high speed. This
can injure a person who is standing too
close to the revolver.
When firing the SP101 revolver (or any
revolver), always be certain that nothing
– including your hands – is in the path of
the hot gas and particles which are
discharged from the front and sides of the
cylinder.
When shooting, adequate eye protection
is essential. Shooters and bystanders
must wear shooting glasses. Hearing
protection must also be worn. Exposure
to shooting noise can damage hearing.

HOT GASES EXIT
BARREL/CYLINDER GAP

TO UNCOCK (DECOCK) THE REVOLVER
If your revolver is cocked, and you wish to let the hammer down to its forward
position (against the frame), proceed as follows: USE EXTREME CARE WHEN
ATTEMPTING TO DECOCK THE REVOLVER, AS THE THUMB SLIPPING
DURING THIS PROCESS CAN RESULT IN AN ACCIDENTAL DISCHARGE IF
THE TRIGGER IS HELD TO THE REAR.
1. Make certain that the revolver is pointed in a safe direction (See Rule 2, Page
35).
2. Make certain both hands are dry and not impeded in any way – gloves,
bandages, cold, etc.
3. Grasp the revolver (if right handed) so that the thumb and forefinger of your
left hand are firmly holding the frame, forward of the trigger guard. Thus,
your left hand is in full control of the revolver (See Figure 4A, Page 17).
4. Place your right thumb firmly on the hammer spur and, with your thumb
securely in control of the hammer, squeeze the trigger only enough to permit
the hammer to ‘break free’ of the trigger. At that instant, IMMEDIATELY
RELEASE THE TRIGGER and then slowly permit the hammer, STILL
SECURE UNDER YOUR THUMB, to move fully forward to its resting position
against the frame. NOTE: It is imperative that finger pressure be removed
from the trigger just as soon as it is free of the hammer. Then, properly, the
trigger and hammer will move towards their fully forward rest positions
together (See Figure 4B, Page 17).

16

Practice this important gun handling skill with an unloaded revolver until you
have developed the proper control and ‘touch’ to decock your revolver safely. The
key to safe decocking is having the weight of the revolver controlled with one
hand, while the thumb and forefinger of the ‘shooting hand’ control the
hammer and trigger. Improperly restraining the trigger during this procedure
may result in the hammer not resting fully against the frame. If this should
occur, carefully repeat the procedure for decocking, steps 1–4 again.

UNCOCKING THE REVOLVER

1

4

2

3

FIGURE 4
B. When hammer is free, IMMEDIATELY
release trigger (3). Then lower hammer
slowly to its resting position completely
down against frame (4).

A. With the thumb controlling the hammer
as shown (1), squeeze trigger to permit
hammer to ‘break free’ (2).

TO UNLOAD OR EJECT CARTRIDGE CASES
KEEP THE REVOLVER POINTED IN A SAFE DIRECTION!
DO NOT ATTEMPT TO UNLOAD WHEN THE HAMMER IS COCKED.
1. Uncock the revolver (See pp. 16 - 17)
2. Press crane latch. Guide cylinder out left of frame as for loading. The revolver
now cannot be fired.
3. Push head of ejector rod smartly toward rear of cylinder until it stops. This
action will extract cartridges or fired cases. Do not eject live cartridges onto
any surface where a primer might strike a solid object and discharge the
cartridge.
4. Check to be sure all chambers are empty.

17

NOTE: When ejecting fired cartridge cases, position the revolver at a
high angle so the cases will come fully out of the chambers and not slip
under the ejector. This high angle positioning is not necessary when
ejecting unfired cartridges.

CORRECT UNLOADING SEQUENCE

3

1

2

4

SPECIAL INSTRUCTIONS FOR 9MM CLIPS
9mm revolvers require special clips to extract cartridges using the ejector rod
because this cartridge has no rim for the ejector to act against. Individual
cartridges may be fired without the clip, but will then require that each cartridge
or fired case be individually removed to unload the revolver.

TO LOAD CLIP:
Hold clip on outside diameter in one hand. With thumb and forefinger of
opposite hand, press cartridge’s extractor groove into clip until it snaps into
place. Continue until clip is fully loaded. Load cartridges, along with the clip,
into the cylinder.

18

TO UNLOAD CLIP:
Eject clip and cases from cylinder. While holding clip on outside diameter, press
empty cases of clip for removal. Clip is now ready to be reloaded. Inspect clips
after each use. If broken, bent or cracked, discard and replace. Additional clips
can be purchased from out Newport, New Hampshire Service Department.

WARNING – DISASSEMBLY
Always unload a firearm before
cleaning, lubrication, disassembly
or assembly.
Never remove or install a loaded
cylinder – it can fire if dropped or
struck.

3

1

2

4

UNLOAD BEFORE CLEANING

DISASSEMBLY
Read instructions before disassembling a gun.
1. BE CERTAIN THE REVOLVER IS UNLOADED BEFORE DISASSEMBLY.
2. Using a properly fitting screwdriver, remove
grip screw. Remove pistol grip inserts from
grips. Grip panel locator may then be removed.
Pull grip downward off frame. Take care not to
lose the disassembly pin, which may fall free
when the grip is removed.
3. Cock the hammer. Insert disassembly pin
Figure 5 about one half its length into the hole at the
rear of the mainspring strut. Lacking a
disassembly pin, any similar instrument will serve (See Figure 5).
4. With thumb on hammer spur, squeeze trigger allowing hammer to go fully
forward. Lift out mainspring assembly. CAUTION: Do not remove the
disassembly pin until the mainspring assembly is reinstalled in the revolver at
the time of reassembly. Doing so will permit
the mainspring to fly off its strut with great
force and may cause injury.
5. Pull trigger and remove hammer pivot while
holding trigger in a rearward position. Lift
hammer out of the top of the frame while
trigger is held in a rearward position (See
Figure 6).
Figure 6

19

6. Use mainspring assembly to depress trigger guard lock plunger located inside
frame at rear of trigger guard. Simultaneously pull down and remove trigger
guard assembly (See Figure 7 & 8).

Figure 7

Figure 8

NOTE: If you cannot supply sufficient force to the plunger using the mainspring
assembly as a “tool”, then use a screwdriver of appropriate size and insert
through hole in frame. It may be necessary to slightly depress the trigger while
removing the trigger guard assembly.
7. Cradle the revolver frame in your left hand and with the thumb of your right
hand press cylinder latch button, swing out cylinder assembly and remove it
forward from the frame.
8. Further disassembly is not essential for normal cleaning purposes. Any further
disassembly should only be undertaken by factory service personnel.

REASSEMBLY
AGAIN, BE CERTAIN REVOLVER IS UNLOADED!
Before starting reassembly, be certain that all components and the inside of the
frame are thoroughly clean. In particular the tongue on the front of the trigger
guard and its mating recess in the frame must be completely clean.
1. Replace cylinder and crane assembly in frame and close cylinder.
2. Hook front of trigger guard into recess in
frame (See Figure 7). Align pawl in its recess
in the frame and be sure transfer bar is in
correct position in frame then allow latch to
re-engage. If solid resistance is felt when
swinging trigger guard into frame, or if
trigger guard will not lock into position recheck position of pawl and transfer bar (See
Figure 9).

TRANSFER
BAR
PAWL

Figure 9

20

NOTE: At this point in reassembly trigger should function to rotate and lock the
cylinder. Pull the trigger a few times, to check proper functioning, as always with
the revolver pointed in a safe direction.
3. Hold trigger in its rearward position and insert hammer into frame. Install
hammer pivot. Release trigger and permit hammer to go fully forward.
4. With hammer forward, insert mainspring assembly into frame. Position the
two ends of notch in the mainspring seat onto the matching projections of the
grip frame. (Note: The large notch in the mainspring seat should be forward to
allow clearance for the grip screw.) Hold mainspring assembly in position and
cock hammer. It may be necessary to move the mainspring assembly a little to
properly position the upper end of the mainspring strut to rest in recess in the
hammer. When the hammer is cocked, disassembly pin can be removed (It will
fall free).
5. Squeeze trigger and ease hammer down. Put the disassembly pin in its “nest.”
Push grip upward onto the frame, install grip panel locator and place pistol
inserts into position. Install and tighten grip panel screw.
6. Open and close cylinder. Function the trigger and hammer single action and
double action to be certain that all parts are working properly.

CARE AND CLEANING
ALWAYS BE CERTAIN THE REVOLVER IS UNLOADED BEFORE CLEANING.
The internal mechanism of the SP101 revolver can be lubricated without
disassembly. A few drops of light oil recommended as suitable for firearms,
applied periodically about the various frame openings, will work its way into the
mechanism parts. The exterior of the revolver and the bore and chambers should
be thoroughly cleaned and then wiped with an oily cloth if the gun is to be
stored. Do not apply excess lubrication.
To clean the revolver after firing, swing the cylinder out and clean the barrel
from the muzzle by running a cleaning rod with a solvent coated patch through
the bore several times. A bronze wire brush (of correct size for gun caliber)
attached to the cleaning rod should then be pushed the full length of the bore
several times. Again swab the bore with a solvent coated patch. Then wipe the
rod clean and, using a dry patch, swab the bore until it is clean. Examine the
bore to be sure that no fouling remains. Repeat the above procedure for each of
the five chambers.
Chambers must be thoroughly scrubbed to remove build-up of bullet metal and
firing residue. A dirty chamber can prevent full seating of a cartridge, which in
turn causes the cylinder to bind. DO NOT APPLY EXCESSIVE OIL TO
UNDERSIDE OF EJECTOR – AREA SHOULD BE WIPED DRY WITH OILY
CLOTH. Also, the underside of the ejector (‘star’) and the area of the cylinder
where the ejector seats, must be clean. Dirt can prevent the ejector from fully
seating. That condition can cause hard closing of the cylinder and interfere with
proper cylinder rotation.

21

If lead bullet loads are fired extensively, lead build-up may cause cylinder
binding. Lubricate the cylinder crane gap with Break-Free® CLP or some other
lubrication which meets mil. spec. Mil-163460 to prevent this condition.

WARNING – LUBRICATION
Firing a revolver with oil, grease, or any
other material even partially obstructing the
bore may result in damage to the revolver
and injury to the shooter and those nearby.
Do not spray or apply lubricants directly on
ammunition. If the powder charge of a
cartridge is affected by the lubricant, it may
not be ignited, but the energy from the
primer may be sufficient to push the bullet
into the bore where it may become lodged.
Firing a subsequent bullet onto the
obstructed bore may damage the revolver
and cause injury to the shooter and those
nearby. Use lubricants properly. You are
responsible for the proper care and
maintenance of your firearms.

IMPROPER LUBRICATION
DESTROYS GUNS

STORAGE
GUNS SHOULD NOT BE STORED LOADED!
USE THE LOCKING DEVICE SUPPLIED WITH
THE REVOLVER FOR STORAGE.
(SEE PAGE 6)

Do not keep your revolver in a leather, fabric or canvas holster when it is stored.
These materials attract moisture, even though the holster may appear to be
perfectly dry.

TO RENDER THE REVOLVER INOPERATIVE FOR SAFE STORAGE
With the muzzle pointed in a safe direction, press the cylinder latch and swing the
cylinder outward. Check to be sure that each chamber is completely unloaded!
With a coin or screwdriver, unscrew the grip panels and remove the grips. Cock the
hammer and then insert the disassembly pin into the hole at the bottom of the
mainspring strut. Uncock the hammer, remove the hammer strut from the frame,
remove the hammer pivot from the frame, and lift the hammer out of the top of
the frame. Use a screwdriver to depress the trigger housing latch and remove the
trigger assembly from the bottom of the frame.
Store the hammer and the trigger assembly in different locations from the frame.
When disassembled in this manner, the revolver is inoperable. It is impossible to
fire the revolver until the trigger assembly and the hammer have been correctly
reassembled into the frame.

22

To reassemble the revolver for firing, carefully reinsert the trigger housing into
the frame. Place the hammer into the top of the frame, and reinsert the hammer
pivot pin. Cock the hammer, reinstall the mainspring strut, and remove the
disassembly pin from the mainspring strut. Lower the hammer and replace the
grips on the revolver. The revolver is now reassembled and can be loaded and
fired normally.
While the revolver is less likely to be used by unauthorized persons when
disassembled in the above manner, it is always safest to store a firearm with
the supplied locking device correctly installed, or to store the firearm in a gun
safe or other secure location, away from children and unauthorized adults.
Guns should always be stored securely, unloaded and separate from their
ammunition.

WARNING – STORAGE
Never place or store any firearm in
such a manner that it may be
dislodged. Firearms should always be
stored securely and unloaded, away
from children and careless adults. Use
the locking device originally supplied
with this firearm for storage.
The use of a locking device or safety
lock is only one aspect of responsible
firearms storage. For increased safety,
firearms should be stored unloaded and
locked in a location that is both
separate from their ammunition and
inaccessible to children and any other
unauthorized person.

STORE SECURELY & UNLOADED

CARE OF STAINLESS STEEL REVOLVERS
Revolvers made of stainless steel are more resistant to corrosion than blued steel
revolvers. However, in the interest of proper operation and long life of your
revolver, inspect it frequently and clean, lubricate and apply an appropriate rust
preventative.
Sometimes surface discoloration may be noted, particularly in the grip area of
stainless steel revolvers, resulting from perspiration. Contact with some types of
holsters can also cause stains or rusting. Rusting may also occur as a result of
the revolver being exposed to moisture, humidity, salt air or chemicals.

23

Minor discoloration can usually be removed by rubbing the stained area with an
abrasive ink eraser, crocus cloth, or a “metal polishing” compound. When using
any of these abrasives, proceed with care and use light pressure to achieve a
blending of ‘color’ with those areas that are not discolored.
External surfaces of the barrel, frame and cylinder should be cleaned and wiped
dry after use or after exposure to adverse conditions. If the revolver is to be
stored, coat it with a light film of oil or preservative. Where the revolver is in
continuing use, and the presence of oil or grease would be objectionable, then
the external surface can be coated (after cleaning and drying) with a paste wax
formulated for use on metals. Apply the wax sparingly, allow time for it to dry
hard, then buff lightly with a soft cloth. When applying the wax, take care that it
does not get into the mechanism or on the functioning parts such as the
hammer, trigger, crane latch, etc. A properly applied hard wax coating will not
interfere with gun handling and it will provide a measure of protection.

SIGHTS
.38 SPL, .357 Mag. & 9mm
The SP101 .38 SPL, .357 Mag. & 9mm revolvers are provided with fixed sights.
To change the front sight, drive out the pin in the barrel rib with a small punch
and lift out sight blade.

Rear sight

Suggested sight picture
Top of front sight even with top
of rear sight. Front sight centered
in notch of rear sight. Target
bullseye centered on top of front
sight.

24

SIGHT ADJUSTMENTS
.22 LR & .32 H & R Magnum
The SP101 .22 LR & .32 H & R Magnum revolvers are equipped with sights
adjustable for windage. Each click of the rear sight adjustment screw will move
the point of bullet impact approximately 1/2” on the target at 25 yards using a 4”
barrel length.
To move the point of impact to the right: Turn the click screw counterclockwise.
To move the point of impact to the left: Turn the click screw clockwise.

SERVICE AND PARTS POLICY
If you have any questions with regard to the performance of your RUGER®
SP101 revolver please write or call (603-865-2442) our Product Service
Department in Newport, New Hampshire 03773, fully describing all
circumstances and conditions involved. If you should return your revolver to the
factory for repair, or order parts for it, please comply with the following
suggestions for prompt service:

WARNING–BEFORE SHIPPING ANY
FIREARM, BE ABSOLUTELY CERTAIN THAT IT
AND ITS CYLINDER ARE UNLOADED. DO
NOT SHIP CARTRIDGES WITH A FIREARM.

SHIPPING FIREARMS FOR REPAIR
RUGER® SP101 revolvers returned to the factory for repair should be sent
to: Sturm, Ruger & Company, Inc., Product Service Department, 411 Sunapee
St., Newport, New Hampshire 03773. Telephone (603) 865-2442.
Guns should be sent prepaid. We will not accept collect shipments.
The Federal Gun Control Act, as well as the laws of most States and localities, do
not prohibit an individual (who is not otherwise barred from purchasing or
possessing a firearm) from shipping a firearm directly to the manufacturer for
repair. However, before you ship your revolver to us, be certain that your State or
locality does not have a law or regulation which will prohibit you from receiving
the revolver from us after it has been repaired. If such receiving is prohibited,
then please have a Federally Licensed firearms dealer ship the gun to us. If your
revolver is sent to us by a dealer, it will be returned to him after being repaired.
If a handgun (pistol or revolver) is shipped by an individual who does not hold a
Federal Firearms License, it must be shipped via U.P.S. (Next Day Air) Persons
who do not hold a Federal Firearms License are prohibited by Federal law from
shipping a handgun by Mail. Handguns mailed in violation of the law are
impounded by the Post Office.

25

DO NOT SEND GUN BOXES OR LITERATURE THAT YOU CONSIDER TO BE
COLLECTOR’S ITEMS – THESE ARE INVARIABLY DAMAGED OR
DESTROYED IN SHIPMENT. Please do not include holster, grip panels, or other
accessories with a firearm being shipped to the factory for service. Always insure
your shipment.
Enclose a letter which includes your name, address, telephone number, serial
number and model of the firearm. Describe in detail the trouble you have
experienced with your firearm, or the work you wish to have done. Merely stating
that the firearm “needs repair” is inadequate information.
Work performed will bear a net minimum labor charge of $20.00 plus a $20.00
shipping and handling charge. The charge for metal refinishing the RUGER®
SP101 revolver is $50.00 plus a $20.00 shipping and handling charge. Custom
gunsmithing service or nonstandard alterations are NOT AVAILABLE from Ruger
Product Service Departments.

WARNING –PARTS PURCHASERS
It is the purchaser’s responsibility to be
absolutely certain that any parts ordered from the
factory are correctly fitted and installed. Firearms
are complicated mechanisms and IMPROPER
FITTING OF PARTS MAY RESULT IN A
DANGEROUS MALFUNCTION, DAMAGE TO
THE FIREARM, AND SERIOUS INJURY TO THE
SHOOTER AND OTHER PERSONS. The
purchaser and installer of parts must accept full
responsibility for the correct adjustment and
functioning of the revolver after such installation.

PARTS MUST FIT CORRECTLY

ORDERING PARTS
Please contact the New Hampshire Product Service Department for parts
availability and current prices. All parts orders for the RUGER® SP101
revolvers should be sent to: Sturm, Ruger & Co., Inc., Product Service
Department, 411 Sunapee Street, Newport, New Hampshire 03773, 603-8652442. We cannot comply with open account or C.O.D. orders. Payment in the
form of a check, money order, Visa or Mastercard must accompany your order.
Credit Card orders must include the account number, expiration date and
whether it is a Visa or Mastercard account. Minimum parts order is $1.00 plus
$3.50 shipping and handling charge. Order parts by Part Name and Part Number
and include the entire serial number of the firearm for which the parts are being
ordered. There is a minimum net labor charge of $20.00 plus $20.00 shipping
and handling charge if the parts are factory fitted. All factory fitted parts are fit
on an exchange basis only. We will not return the replaced parts.

26

Barrels, cylinders, cylinder/crane assemblies and a number of other component
parts must be fitted at the factory. Company policy is to proof-test and/or
function fire all barrels after fitting to the frames in which they are to be used.
This procedure ensures maximum protection to our customers. The special
proof-test ammunition used in this testing is sold only to bonafide firearms
manufacturers and is not available to gun shops, gunsmiths, or individuals.
Because the frame of the RUGER® SP101 revolver is a serial numbered
component, it is defined as a “firearm” by Federal law and is not sold as a
separate component.
*Parts designated by an asterisk must be factory fitted. These parts are fitted on
an exchange basis only. We will not return the replaced parts. We will not return
any part that is broken, malfunctioning, badly worn or has been modified. See
“Warning – Parts Purchasers”, p. 26.

CAUTION: A gun containing modified, broken,
malfunctioning, or badly worn parts should not be fired.

27

28

Part Name
Barrel, 2 1/4”
Barrel, 3 1/16”
Barrel, 2 1/4”
Barrel, 2 1/4”, Extended Frame
Barrel, 3 1/16”
Barrel, 2 1/4”
Barrel, 3 1/16”
Barrel, 2 1/4”
Barrel, 4”, Half Shroud
Barrel, 4”, Full Shroud
Barrel, 3 1/16”
Barrel, 4”, Full Shroud
Cable Lock, 10”, Not Illustrated
Case Only, Small
Center Pin Lock
Center Pin Rod
Center Pin Rod
Center Pin Spring
Center Pin Spring
Clip, Full Moon, 10 per package
* Crane & Crane Pivot Assembly

*
*
*
*
*
*
*
*
*
*
*
*

Part No.
KW00625
KW00626
KW00601
KW00640
KW00602
KW00617
KW00616
KW00607
KW00620
KW00606
KW00612
KW00611
PM120A
RGC-S
KW05300
KW05400
KW05410
KW03400
KW03410
W06400-10
KW00800A

Model
SP101
- .357 cal.
SP101
- .357 cal.
SP101
- .38 Special
SP101
- .38 Special
SP101
- .38 Special
SP101
- 9mm
SP101
- 9mm
SP101
- .22 cal.
SP101
- .22 cal.
SP101
- .22 cal.
SP101
- .32 H&R
SP101
- .32 H&R
All SP101 Models
All SP101 Models
All SP101 Models
SP101
- .38 Special, 9mm, .22 cal., .32 H&R
SP101
- .357 cal.
SP101
- .38 Special, 9mm, .22 cal., .32 H&R
SP101
- .357 cal.
SP101
- 9mm
SP101
- .38 Special, 9mm, .22 cal., .32 H&R

Design, prices and specifications subject to change without notice.
SPECIFY MODEL AND CALIBER WHEN ORDERING
(See Exploded View on Page 33)

PARTS LIST

RUGER® SP101® REVOLVER

.

29

Part Name
* Crane & Crane Pivot Assembly
* Crane Latch
* Crane Latch Pivot
Crane Latch Spring
Crane Latch Spring Plunger
* Crane Pivot Lock Plunger
* Crane Pivot Lock Spring
* Cylinder
* Cylinder
* Cylinder
* Cylinder, 6-shot
* Cylinder, 6-shot
Cylinder Latch
Cylinder Latch Pivot
Cylinder Latch Plunger
Cylinder Latch Spring
Disassembly Pin
* Ejector
* Ejector
* Ejector
* Ejector
* Ejector
Ejector Alignment Pin, (2 Req’d.)
* Ejector Retainer
Ejector Rod
Ejector Spring
Ejector Spring

Part No.
KW00812A
KW00900
KW02700
KE-57
KH05100
KH06700
KH07600
KW00100
KW00116
KW00104
KW00102
KW00103
KW04501
KH01400
KE-51
KH05000
E-63
KW01817
KW01800
KW01805
KW01802
KW01803
KE-35
KW02400
KW02300
KW02500
KW02510

Model
SP101
- .357 cal.
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
SP101
- .357 cal. or .38 Special
SP101
- .357 cal.
SP101
- 9mm
SP101
- .22 cal.
SP101
- .32 H&R
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
SP101
- .357 cal.
SP101
- .38 Special
SP101
- 9mm
SP101
- .22 cal.
SP101
- .32 H&R
All SP101 Models
All SP101 Models
All SP101 Models
SP101
- .38 Special, 9mm, .22 cal., .32 H&R
SP101
- .357 cal.

30

*
*
*

*
*

Part Name
Ferrule (Right Side), Not Illustrated
Ferrule (Left Side)
Firing Pin
Firing Pin
Firing Pin Rebound Spring
Front Latch
Front Latch Pivot Lock
Front Latch Pivot Lock Spring
Front Latch Pivot Pin
Front Latch Spring
Front Latch Spring Plunger
Front Sight
Front Sight
Front Sight
Front Sight Cross Pin
Grip, 1 Piece Rubber, No Inserts
Grip with Plastic Inserts
(Disassembly Pin & Screw Included)
Grip Inserts, Black Plastic (Sold in Pairs Only)
Grip Inserts, Wood (Sold in Pairs Only)
Grip Panel Locator
Grip Panel Screw
Hammer Assembly
Hammer Assembly, Spurless, Not Illustrated
Hammer Dog
Hammer Dog Pivot Pin

Model
All SP101 Models
All SP101 Models
SP101
- .357 cal., .38 Special, 9mm, .32 H&R
SP101
- .22 cal.
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
SP101
- .357 cal., .38 Special, 9mm
SP101
- .22 cal.
SP101
- .32 H&R
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models

Part No.
W01014
W01015
KH02100
KXR02100
KE-48
KW03100
KH07500
KH07700
KW05600
KE-57
KW06800
W03602
W03603
W03604
KW02600
W01000
W21000
W21018
WI
W03300
KW01300
KW24000
KW24004
KW01900
KE-22

31

*
*

*
*

Part Name
Hammer Dog Spring
Hammer Dog Spring Plunger
Hammer Pivot Assembly
Hammer Strut
Hammer Strut Mainspring
Hammer Strut Mainspring Seat
Pawl
Pawl
Pawl Plunger
Pawl Plunger Spring
Rear Sight Adjustment Screw
Rear Sight Blade
Rear Sight Spring
Recoil Plate
Recoil Plate
Recoil Plate Cross Pin
Recoil Plate Cross Pin
Safety Insert
Safety Insert
Transfer Bar
Transfer Bar
Trigger Assembly
Trigger Guard
Trigger Guard Latch
Trigger Guard Latch Pin
Trigger Guard Latch Spring
Trigger Link

Part No.
KE-57
KH05100
KE-16
KT01500
KW00401
KT00500
KW00700
KW00701
KH05100
KH05000
W05900
W05902
MR05907
KMR02000
KXR02000
KE-49
KH04900
W10000
W10002
KW01700
KW01701
KW23900
KW00300
KW04600
KE-22
KW03800
KW07100

Model
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
SP101
- .357 cal., .38 Special, 9mm
SP101
- .22 cal., .32 H&R
All SP101 Models
All SP101 Models
SP101
- .22 cal., .32 H&R
SP101
- .22 cal., .32 H&R
SP101
- .22 cal., .32 H&R
SP101
- .357 cal., .38 Special, 9mm, .32 H&R
SP101
- .22 cal.
SP101
- .357 cal., .38 Special, 9mm, .32 H&R
SP101
- .22 cal.
SP101
- .357 cal., .38 Special, 9mm, .32 H&R
SP101
- .22 cal.
SP101
- .357 cal., .38 Special, 9mm, .32 H&R
SP101
- .22 cal.
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models

32

* PARTS SO MARKED MUST BE FACTORY FITTED

Part Name
Trigger Link Pin
Trigger Link Plunger
Trigger Pivot Pin
Trigger Plunger

Part No.
KH06400
KW03700
KE02800
KH03200

Model
All SP101 Models
All SP101 Models
All SP101 Models
All SP101 Models

33

EXPLODED VIEW

SP101®

34
KW00401 MAINSPRING
KT00500 MAINSPRING SEAT

KW04501 CYLINDER LATCH

KT01500
HAMMER STRUT

SP101
REVOLVER MECHANISM

KW04600 TRIGGER GUARD LATCH

KW03800 TRIGGER GUARD LATCH SPRING

KW03700 TRIGGER LINK PLUNGER

KW07100 TRIGGER LINK

KW03900 TRIGGER

KE-57 & KW06800
FRONT LATCH SPRING & PLUNGER

KW03100 FRONT LATCH

KW02300 EJECTOR ROD

KW00700 PAWL

KW00900 CRANE LATCH

KW04000 HAMMER

KW01700 TRANSFER BAR

KH02100 FIRING PIN

KW05300 CENTER PIN LOCK

KW05400 CENTER PIN ROD

THE BASIC RULES OF SAFE FIREARMS HANDLING
We believe that Americans have a right to purchase and use firearms for lawful
purposes. The private ownership of firearms in America is traditional, but that
ownership imposes the responsibility on the gun owner to use his firearms in
a way which will ensure his own safety and that of others. When firearms are
used in a safe and responsible manner, they are a great source of pleasure and
satisfaction, and represent a fundamental part of our personal liberty.
Firearms do not cause accidents! Firearms accidents are almost always found
to have been the result of carelessness, or ignorance on the part of the shooter
of the basic rules of safe gun handling.
The following rules must be observed by gun users at all times. Safe gun
handling is not just desirable, it is absolutely essential to your safety, the safety
of others, and the continuation of gun ownership and sport shooting as we
know it today.

1. LEARN THE MECHANICAL AND HANDLING
CHARACTERISTICS OF THE FIREARM YOU ARE USING.

®

R
RUGE NUAL

N MA
UCTIO
NS
INSTR
UCTIO
E INSTR IN THIS
TH
D
EA
R
NINGS LLY BEFORE
R
A
W
U
AND
L CAREF
.
MANUATHIS FIREARM
USING

Not all firearms are the same. The
method of carrying and handling
firearms varies in accordance with the
mechanical provisions for avoiding
accidental discharge and the various
proper procedures for loading and
unloading. No person should handle
any firearm without first having
thoroughly familiarized himself with
the particular type of firearm he is
using, and with safe gun handling in
general.

2. ALWAYS KEEP THE
MUZZLE POINTED IN A
SAFE DIRECTION.
Be sure of the bullet stop behind your
target, even when dry-firing. Never let
the muzzle of a firearm point at any
part of your body or at another
person. This is particularly important
when loading or unloading a firearm.
In the event of an accidental
discharge, no injury can occur as long
as the muzzle is pointing in a safe
direction. A safe direction means a
direction which will not permit a
discharged bullet to strike a person, or to strike an object from which the
bullet may ricochet.

35

A safe direction must take into account the fact that a bullet may penetrate a
wall, ceiling, floor, window, etc., and strike a person or damage property. Make
it a habit to know exactly where the muzzle of your gun is pointing whenever
you handle it, and be sure that you are always in control of the direction in
which the muzzle is pointing, even if you fall or stumble. Keep your finger off
the trigger until you are ready to shoot.

3. FIREARMS SHOULD BE UNLOADED WHEN NOT IN
USE.

3

1

2

4

Firearms should be loaded only when
you are in the field or on the target
range or shooting area, ready to shoot.
Firearms and ammunition should be
securely locked in safes, racks or
cabinets, or by using the locking
device supplied with the firearm when
not in use. Ammunition should safely
be stored separate from firearms.
Store your firearms out of sight of
visitors and children. It is the gun
owner’s responsibility to be certain
that children and persons unfamiliar
with firearms cannot gain access to
firearms, ammunition, or
components.

4. BE SURE THE BARREL IS
CLEAR OF OBSTRUCTIONS
BEFORE SHOOTING.
Even a bit of mud, snow or excess
lubricating oil or grease in the bore
may cause the barrel to bulge, or
even burst on firing, and can cause
serious injury to the shooter and
bystanders. Be sure that you are
using ammunition of the proper
caliber and loading for the gun you
are using. If the report or recoil on
firing seems weak, or doesn’t seem
quite right, CEASE FIRING IMMEDIATELY, unload your firearm, and check to
be sure that no obstruction has become lodged in the barrel.

36

5. BE SURE OF YOUR
TARGET BEFORE YOU
SHOOT.
Don’t shoot unless you know
exactly where your bullet is going
to strike. Be sure of the bullet
stop behind your target, even
when dry-firing with an unloaded
gun. If you are in the field
hunting, do not fire at a
movement or noise. Take the time
to be absolutely certain of your
target before you pull the trigger.

6. WEAR SHOOTING
GLASSES AND HEARING
PROTECTORS WHEN
YOU SHOOT.
All shooters should wear
protective shooting glasses and
adequate hearing protectors when
shooting. Exposure to shooting
noise can damage hearing, and
adequate eye protection when
shooting is essential.

7. NEVER CLIMB A TREE
OR FENCE WITH A
LOADED FIREARM.
Put the firearm down carefully
before climbing a fence, and
unload it before climbing or
descending a tree or jumping
over a ditch or other obstruction.
Never pull or push a loaded
firearm toward yourself or
another person. When in doubt,
or whenever you are about to do
anything awkward, unload your
gun!

37

8. DON’T SHOOT AT A
HARD SURFACE, OR AT
WATER.
Bullets can glance off many
surfaces like rocks or the surface
of water and travel in
unpredictable directions with
considerable velocity.

9. NEVER TRANSPORT A
LOADED FIREARM.
Firearms should always be
unloaded before being placed in a
vehicle. A suitable carrying case
or scabbard should by used to
carry an unloaded firearm to and
from the shooting area.

10. AVOID ALCOHOLIC
BEVERAGES WHEN
SHOOTING.
Don’t drink until the day’s
shooting is over. Handling
firearms while under the
influence of alcohol in any form,
or medications that could affect
your judgment or co-ordination,
constitutes a criminal disregard
for the safety of others.

38

A BRIEF ACCOUNT OF AN EXTRAORDINARY
ACHIEVEMENT: RUGER FIREARMS
One of the few American firearms manufacturers whose management
has remained in the same family since starting in business, Sturm,
Ruger & Company, Inc., had its beginning in a small machine shop
occupying a rented frame building in Southport, Connecticut. In
January, 1949, with an initial investment of only $50,000 and an idea,
William B. Ruger and Alexander M. Sturm started production of a .22
caliber autoloading pistol–a design which was so successful that it
became the cornerstone upon which one of the most comprehensive
lines of sporting firearms ever made in America was established. After
Alex Sturm’s death in 1951, William B. Ruger continued to direct the
company alone and today, William B. Ruger, Jr. continues to provide
guidance which has made this company a sound and successful
enterprise.
Sturm, Ruger & Company, in this relatively short time, has established
itself as a leading small arms design organization, developing a unique
and broad line of fine quality sporting, military and police firearms to
become one of the world’s most famous producers of revolvers, pistols,
rifles and shotguns. Since 1949 Ruger craftsmen have built many
millions of firearms.
During its five decades of growth and progress under the leadership of
William B. Ruger, the company developed a business philosophy and
implemented policies which represent a constructive influence in the life
of modern America. From the beginning, Sturm, Ruger & Company
played a positive role in conservation efforts and has supported the
interests of shooters through such groups as the National Rifle
Association, National Shooting Sports Foundation, and many regional
sportsmen’s organizations.
The company has always endeavored to market its firearms for
constructive and recreational purposes, to emphasize the traditional
aspects of shooting, to render meaningful public services and to
encourage shooters in constructive, responsible, and safe participation in
the shooting sports. Its motto is “Arms Makers For Responsible
Citizens.”
Today, Sturm, Ruger & Company is particularly mindful of those
elements which have contributed to the creation of its success, and
extends heartfelt thanks to its many loyal employees and customers.

A current catalog of Ruger firearms is available free upon request to
Sturm, Ruger & Co., Inc., Southport, CT 06890
39

WHY NO WARRANTY CARD HAS BEEN
PACKED WITH THIS NEW RUGER FIREARM
The Magnuson-Moss Act (Public Law 93-637) does not require any
seller or manufacturer of a consumer product to give a written
warranty. It does provide that if a written warranty is given, it must be
designated as “limited” or as “full” and sets minimum standards for a
“full” warranty. Sturm, Ruger & Company, Inc. has elected not to
provide any written warranty, either “limited” or “full”, rather than to
attempt to comply with the provisions of the Magnuson-Moss Act and
the regulations issued thereunder. There are certain implied
warranties under state law with respect to sales of consumer goods. As
the extent and interpretation of these implied warranties varies from
state to state, you should refer to your state statutes. Sturm, Ruger &
Company wishes to assure its customers of its continued interest in
providing service to owners of Ruger firearms.

STURM, RUGER & Company, Inc.
Southport, Connecticut 06890 U.S.A.
http://www.ruger.com
“Arms Makers For Responsible Citizens” ®
A COPY OF THE INSTRUCTION MANUAL FOR ANY RUGER
FIREARM IS AVAILABLE FROM THE FACTORY FREE ON REQUEST.
THESE INSTRUCTION MANUALS CONTAIN IMPORTANT
WARNINGS WHICH MUST BE UNDERSTOOD
BEFORE USING THESE FIREARMS.

“RUGER”, the Sturm, Ruger logo, “SINGLE-SIX”, “BLACKHAWK”, “REDHAWK”, “SECURITY-SIX”,
“SPEED-SIX”, “SERVICE-SIX”, “BEARCAT”, “OLD ARMY”, “10/22”, “MINI-14”, “MINI THIRTY”,
“RANCH RIFLE”, “M77”, “77/22”, “77/44”, “77/50”, “GP-100”, “SP101”, “P-85” and “VAQUERO”
are registered U.S. trademarks.
“77/17” & “Gold Label” are Ruger trademarks.



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