Ruger Mark III Instruction Manual

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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. State precisely what is
wrong. Please enclose copies of any previous correspondence.
Work performed will bear a net minimum labor charge of $20.00 plus a $20.00
shipping and handling charge. The charge for metal...

RUGER
®MARK III
PARTS LIST
Design, prices and specifications subject to change without notice.
SPECIFY MODEL WHEN ORDERING
(See Exploded Views on pages 36 - 38)
Key No. Part Name Part No. Model
*  1 Barrel/Receiver Assembly AB5300-512 MKIII Target - blued model
KAB5300-512 MKIII Target - stainless model
APB5300-512 22/45 MKIII - blued model
KAPB5300-512 22/45 MKIII - stainless model
2 Front Sight A03612 MKIII & 22/45 MKIII models
3 Front Sight Screw XR07600 MKIII & 22/45 MKIII models
4 Barrel/Receiver...

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Key No. Part Name Part No. Model
17 Firing Pin Stop Pin A03500 MKIII & 22/45 MKIII - blued models
KA03500 MKIII & 22/45 MKIII - stainless models
18 Rebound Spring A20000 MKIII & 22/45 MKIII - blued models
KA20000 MKIII & 22/45 MKIII - stainless models
19 Rebound Spring Support A03900 MKIII & 22/45 MKIII - blued models
KA03900 MKIII & 22/45 MKIII - stainless models
20 Firing Pin  A01300 MKIII & 22/45 MKIII models
21 Recoil Spring Assembly KA-57 MKIII & 22/45 MKIII models
22 Extractor Spring  KA20300...

34
Key No. Part Name Part No. Model
* 34 Safety Assembly, Complete AN-53-100 MKIII - blued models
KA-53-100 MKIII - stainless models
AP-53-100 22/45 MKIII models
* 35 Hammer Assembly, Complete A01803-100 MKIII & 22/45 MKIII 
- blued Target models
KA01803-100 MKIII & 22/45 MKIII
- stainless Target models
A01802-100 MKIII & 22/45 MKIII Standard models
36 Magazine Disconnector Spring A20250 MKIII & 22/45 MKIII models
37 Magazine Disconnector KA01110 MKIII & 22/45 MKIII models
* 38 Disconnctor Assembly KA011...

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Key No. Part Name Part No. Model
52 Lock Pin KA02614 MKIII & 22/45 MKIII models
53 Spring Back-up Pin KA02616 MKIII & 22/45 MKIII models
54 Detent Plunger Lock KV04612 MKIII & 22/45 MKIII models
55 Lock Plunger Detent Spring KV06476 MKIII & 22/45 MKIII models
56 Hammer Spring Plunger KA02509 MKIII & 22/45 MKIII models
57 Hammer Spring A20100 MKIII & 22/45 MKIII models
58 Housing Latch Detent Ball A04100 MKIII & 22/45 MKIII models
59 Housing Latch A00700 MKIII - blued models
KA00700 MKIII - stainless...

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RUGER®MARK III
EXPLODED VIEW
Note A— The Bolt Stop components in this group are for holding open the bolt and are
not functionally related to the Bolt Stop Pin and Bolt Stop Pin Pivot. These two later
components are attached to the Mainspring Housing Assembly (Key No. 51; Part No.
A00910-100). See parts drawing below for relationship of parts.
Front and rear sights
for the Target Models
are not adaptable to
Standard Models.   

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RUGER®22/45 MARK III
EXPLODED VIEW
Note B— The Bolt Stop components in this group are for holding open the bolt and are
not functionally related to the Bolt Stop Pin and Bolt Stop Pin Pivot. These two later
components are attached to the Mainspring Housing Assembly (Key No. 51; Part No.
AP00903-100). See parts drawing below for relationship of parts.
Front and rear sights
for the Target Models
are not adaptable to
Standard Models.   

38
NOTE C— Scope mount bases and rings listed will fit all MARK IIIand
22/45 MARK IIIpistols. Only the MARK IIICompetition model is drilled
and tapped at the factory. All other models must be drilled and tapped by your
local gunsmith. Drilling and tapping instructions are available on request.
RUGER®COMPETITION MODEL
COMPONENT PARTS
(All other parts the same as Mark III)   

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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....

40
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
.
Firearms should be...