Code 4 Law Enforcement Sales & Service
Repair Parts for AR-15 and M16 Rifles



We stock individual AR-15 and M16 parts as well as 
complete parts kits. 

Please 
contact us for current pricing and availability.



 


Lower Receiver Diagram











Lower Receiver Parts List


Ref.

Item Description

Model

Part Number

Price

1

BOLT CATCH

For .223 & 7.62 X 39 Models

SP62301

 

1

BOLT CATCH

For 9mm Models

SP62835

 

2

BOLT CATCH PIN

All Models

SP95105

 

3

BOLT CATCH PLUNGER

All Models

SP62178

 

4

BOLT CATCH SPRING

All Models

SP62177

 

5

BUFFER RETAINER

All Models

SP61582

 

6

BUFFER RETAINER SPRING

All Models

SP61694

 

7

MAGAZINE CATCH

All Models

SP61604

 

8

FIRE CONTROL SELECTOR

All Models

SP63000

 

9

TAKEDOWN PIN DETENT SPRING

All Models

SP61692

 

10

TAKEDOWN PIN DETENT

All Models

SP61698

 

11A

RECEIVER PIVOT PIN SCREW

All Models

SP66819

 

11

RECEIVER PIVOT PIN

All Models

SP66818

 

12

MAGAZINE RELEASE BUTTON

All Models

SP62032

 

13

MAGAZINE RELEASE BUTTON SPRING

All Models

SP61759

 

14

TRIGGER GUARD PIVOT PIN

All Models

SP95106

 

15

TAKEDOWN PIN

All Models

SP61655

 

16

TRIGGER GUARD ASSEMBLY

All Models

SP61970

 

17

TRIGGER GUARD PIN

All Models

SP95101

     

18

TRIGGER GUARD SPRING

All Models

SP61531

 

19

TRIGGER GUARD PLUNGER

All Models

SP61250

 

20

FIRE CONTROL SELECTOR DETENT

All Models

SP61785

 

21

FIRE CONTROL SELECTOR SPRING

All Models

SP61569

 

22

PISTOL GRIP

All Models

SP64576

 

23

PISTOL GRIP LOCK WASHER

All Models

SP90001

 

24

PISTOL GRIP SCREW

All Models

SP92701

 

25

ACCU -WEDGE

Models MT6830, MT6700, AR6830, AR6700

SP99009

 

26

FRONT ADAPTER ASSEMBLY**

9mm Models-Factory Installed Only

**

 

27

REAR ADAPTER ASSEMBLY**

9mm Models-Factory Installed Only

**

 

28

REAR MAGAZINE ADAPTER**

9mm Models-Factory Installed Only

**

 

29

EJECTOR

For 9mm Models Only

SP62830

 

30

REAR MAGAZINE ADAPTER PIN**

9mm Models-Factory Installed Only

**

 

31

MAGAZINE ADAPTER SPRING**

9mm Models-Factory Installed Only

**

 

32

MAGAZINE ADAPTER PIN**

9mm Models-Factory Installed Only

**

 


Pricing and specifications subject to change without notice







Fire Control Diagram






Fire Control Parts List


Ref

Item Description

Model

Part Number

Price

1

PIN , HAMMER & TRIGGER

Large Diameter .170

SP63158

 

Not Shown

PIN , HAMMER & TRIGGER

Small Diameter .155

 

 

Not Shown

PIN , HAMMER & TRIGGER, Stainless Steel

Small Diameter .155

 

 

2

HAMMER & HAMMER PIN RETAINER ASSY, .170, SEMI (Current)

FOR .223 & 7.62 X 39 MODELS, Large Diameter (.170)

SP63165

Not Shown

HAMMER & HAMMER PIN RETAINER ASSY, .170, SEMI, 9mm

For 9mm Models

SP62865

Not Shown

HAMMER & HAMMER PIN RETAINER ASSY, .155, SEMI, 9mm (older models)

For older 9mm models w/ .155 pins

 

 

Not Shown

HAMMER & HAMMER PIN RETAINER ASSY, .155, AUTO

For .223 or 9mm

SP62317

Not Shown

HAMMER & HAMMER PIN RETAINER ASSY, .155, BURST & 4-WAY

For .223 or 9mm

SP64561

3

HAMMER SPRING, SEMI & AUTO

All Models

SP61697

Not Shown

HAMMER SPRING, BURST & 4-WAY

All Models

SP64558

4

DISCONNECTOR, .170, SEMI (current models)

Large Diameter .170

SP63157

Not Shown

DISCONNECTOR, .155, 4-WAY, (left/semi)

Small  Diameter .155

SP63716

Not Shown

DISCONNECTOR, .155, 4-WAY, (right/burst)

Small  Diameter .155

SP63715

Not Shown

DISCONNECTOR, .155, AUTO

Small  Diameter .155

SP62334

Not Shown

DISCONNECTOR, .155, BURST, (left/semi)

Small  Diameter .155

SP64567

Not Shown

DISCONNECTOR, .155, BURST, (right/burst)

Small  Diameter .155

SP64566

Not Shown

DISCONNECTOR, .155, SEMI

(older models)

Small  Diameter .155

SP63036

5

TRIGGER, SEMI

(current models)

Large Diameter .170

SP63156

Not Shown

TRIGGER, SEMI

 

Small  Diameter .155

SP63029

Not Shown

TRIGGER, AUTO

Small  Diameter .155

SP61955

Not Shown

TRIGGER, (0.155), BURST & 4-WAY

Small  Diameter .155

SP64641

6

DISCONNECT SPRING, AUTO, SEMI, BURST, (LEFT/SEMI) – Black Insert

All Models

SP63026

Not Shown

DISCONNECTOR SPRING, BURST, (RIGHT/BURST)

Small  Diameter .155

SP64568

Not Shown

DISCONNECTOR SPRING, SEMI, HEAVY DUTY

All Models

SA06001

7

TRIGGER SPRING

All Models

SP61657

Not Shown

PIN, HAMMER & TRIGGER

Diameter-1713 For CR Models

SP64225

 

Not Shown

 

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