M4 Lower Receiver Assembly

M4/M4A1 Carbine

Figure C-6. Upper Receiver and Barrel Assembly (M16A2) 9349050, and (M4 and M4A1) 12972680.

CAGEC

PART NUMBER

DESCRIPTION AND USABLE ON CODE (UOC)

GROUP 03 UPPER RECEIVER AND BARREL ASSEMBLY (M16A2) 9349050, (M4 AND M4A1] 12972680 FIG. C-6. UPPER RECEIVER AND BARREL ASSEMBLY

1

AFFFF

19200

9349062

UPPER

RECEIVER ASSEMBLY (M16A2)

UOC:AR8

1A

AFFFF

19200

12972675

UPPER

RECEIVER ASSY (M4 AND M4A1)

UOC:AS1,AY6

2

PAOZZ

1005011343629

19200

9349059

HANDGUARD ASSEMBLY (M16A2)

UOC:AR8

2A

PAOZZ

1005012342297

19200

9390003

GUARD,HAND,GUN (M4 AND M4A1)

UOC:AS1,AY6

3

PAFZZ

4710009781038

19200

8448567

TUBE,BENT,METALLIC (M16A2)

UOC:AR8

3A

PAFZZ

4710012338637

19200

9390016

TUBE,BENT,METALLIC (M4 AND M4A1)

UOC:AS1,AY6

4

PAFFF

1005011467684

19200

9349124

BARREL ASSEMBLY (M16A2)

UOC:AR8

4A

PAFFF

1005012338529

19200

9390007

BARREL AND FRONT SI SIGHT ASSEMBLY,

REPLACEMENT (M4 AND M4A1)

UOC:AS1,AY6

5

PAFZZ

5365011441496

19200

9349052

SHIM COMPENSATOR

6

PAFZZ

1005011343633

19200

9349051

COMPENSATOR

7

PAFZZ

5315000586044

96906

MS16562-106

PIN,SPRING ,GAS TUBE

8

PAFZZ

1005000878998

19204

8448712

RING,SLIP,HAND GUAR GUARD

9

PAFZZ

5360009781036

19204

8448555

SPRING,SLIP RING,HA HANDGUARD

UPPER RECEIVER

10

PAFZZ

5325009990863

96906

M5S16626-3137

RING,RETAINING

Cal Spare Barrel Nsn

Figure C-7. (M16A2) Barrel Assembly 9349124 and (M4 and M4A1) Replacement Barrel and Front Sight Assembly 9390007.

ITEM NO

SMR CODE

CAGEC

(5) PART NUMBER

GROUP 0301 (M16A2) BARREL ASSEMBLY

9349124, AND (M4 AND M4A1) REPLACEMENT BARREL AND FRONT SIGHT ASSEMBLY 9390007 FIG. C-7. (M16A2) BARREL ASSEMBLY, AND (M4 AND M4A1) REPLACEMENT BARREL AND FRONT SIGHT ASSEMBLY

1

PAOZZ

1005011343625

1B200

9349Q56

POST,FRONT SIGHT

2

PAOZZ

531500B?B3B30

192Q4

B44B573

PIN,SHOULDER,HEADLE HEADLESS

(DETENT, FRONT SIGHT)

3

PAOZZ

536000B?B3B31

192Q4

B44B574

SPRING,HELICAL,COMP ,COMPRESSION,

FRONT SIGHT

4

PAOZZ

10050001?B543

192Q4

B44B571

SWIVEL,SLING,SMALL

5

PAOZZ

5S200106S16S5

192Q4

B44B697

RIVET,TUBULAR

6

XAFZZ

192QQ

9349Q54

BARREL AND BARREL E EXTENSION

ASSEMBLY (M16A2)

UOC:AR8

A

XAFZZ

192QQ

BSB000B

BARREL AND BARREL EXTENSION

ASSEMBLY (M4 AND M4A1)

UOC:AS1,AY6

7

PAOZZ

5S400126465S0

192QQ

1259B61B

CLAMP,RIM CLENCHING (M4 AND M4A1)

UOC:AS1,AY6

B

PAOZZ

5315006B00544

969Q6

MS39QB6-93

PIN,SPRING (M4 AND M4A1)

UOC:AS1,AY6

9

PAOZZ

1010012646511

192QQ

12598617

MOUNT,SWIVEL (M4 AND M4A1)

UOC:AS1,AY6

END OF FIGURE

END OF FIGURE

M4a1 Disassembly

Figure C-8. Upper Receiver Assembly (M16A2) 9349062, and (M4 and M4A1) 12972675.

Figure C-8. Upper Receiver Assembly (M16A2) 9349062, and (M4 and M4A1) 12972675.

SECTION II

PART

NSN CAGEC NUMBER

DESCRIPTION AND USABLE ON CODE (UOC)

GROUP 0302 UPPER RECEIVER ASSEMBLY (M16A2) 9349062, (M4 AND M4A1) 12972675

FIG. C-8. UPPER RECEIVER ASSEMBLY

1

PAFZZ

1005011343621

19200

9349066

2

PAFZZ

5305011343622

19200

9349065

3

AFFFF

19200

9349072

REAR

4

PAFZZ

3110001839175

96906

MS19060-4808

5

PAFZZ

5360011481751

19200

9349069

6

PAFZZ

1005011343701

19200

9349063

6A

PAFZZ

1005013826795

19200

12972670

7

PAOZZ

5325009990864

96906

MS16632-3012

8

PAOZZ

5315009781023

19204

8448533

9

PAOZZ

1005009781022

19204

8448525

10

PAOZZ

5360009781025

19204

8448532

11

PAFZZ

5315008403812

96906

M5S16562-121

12

PAFZZ

5315008403812

96906

M5S16562-121

13

PAFZZ

5360000179541

19200

8448540

14

AFFFF

19204

9349086

15

PAFZZ

5360011343710

19200

9349070

16

PAFZZ

5355011354972

19200

9349067

INDEX,ELEVATION (M16A2) 1

UOC:AR8

SCREW,INDEX (M16A2) 1

SIGHT ASSEMBLY (M16A2) 1

UOC:AR8

BALL,BEARING (M16A2) 1

UOC:AR8

SPRING,HELICAL,COMP COMPRESSION, 1

INDEX (M16A2)

UOC:AR8

RECEIVER,UPPER (M16A2) 1

UOC:AR8

RECEIVER,CARTRIDGE (M4 AND M4A1) 1

UOC:AS1,AY6

RING,RETAINING ,COVER 1

PIN,GROOVED,HEADLES COVER 1

COVER,EJECTION PORT 1

SPRING,HELICAL,TORS ,COVER 1

PIN,SPRING FORWARD ASSIST 1

PIN,SPRING (M16A2) 1

SPRING,HELICAL,COMP COMPRESSION 1

FORWARD ASSIST

FORWARD ASSIST ASSY ASSEMBLY 1

SPRING,HELICAL,COMP COMPRESSION, 1

ELEVATION (M16A2)

KNOB,ELEVATION (M16A2) 1

UOC:AR8

END OF FIGURE

M16a2 Bolt Forward
Figure C-9. Forward Assist Assembly 9349086.

ITEM NO

SMR CODE

CAGEC

(5) PART NUMBER

1

PAFZZ

1005011441468

19200

9349085

2

PAFZZ

5315010489372

19204

8448521-2

3

PAFZZ

5360005238084

19200

8448542

4

PAFZZ

1005000179540

19204

8448544

5

PAFZZ

3040000179539

19204

8448543

GROUP 030201 FORWARD ASSIST ASSEMBLY 9349086

FIG. C-9. FORWARD ASSIST ASSEMBLY

PLUNGER ASSEMBLY

PIN,SPRING ,PAWL

SPRING,HELICAL,COMP COMPRESSION

PAWL

DETENT,PAWL

PAWL,FORWARD ASSIST

OF FIGURE

M16a1 Rifle Rear Sight

Change 5

-10. (M16A2) Rear Sight Assembly 9349072.

ITEM NO

SMR CODE

CAGEC

(5) PART NUMBER

GROUP 030202 (M16A2) REAR SIGHT

ASSEMBLY 9349072 FIG. C-10. REAR SIGHT ASSEMBLY

1

PAFZZ

5315000586678

96906

MS16562-103

PIN,SPRING ,WINDAGE

2

PAFZZ

1005011343631

19200

9349074

BASE,REAR SIGHT

UOC:ARB

3

PAFZZ

5305011441490

19200

9349076

SCREW,EXTERNALLY RE

4

PAFZZ

5360011481751

19200

9349069

SPRING,HELICAL,COMP ,REAR SIGHT

UOC:AR8

5

PAFZZ

3110001839175

96906

M5S19060-4808

BALL,BEARING

UOC:AR8

6

PAFZZ

1005011353697

19200

9349075

APERTURE,SIGHT

7

PAFZZ

5360013816183

19200

12011987

SPRING,FLAT REAR SIGHT

8

PAFZZ

5355011343627

19200

9349077

KNOB,WINDAGE

END OF FIGURE

END OF FIGURE

4710009781038 Tube

Figure C-11. Lower Receiver and Buttstock Assembly (Ml 6A2) 9349100, (M4) 9390011 and (M4A1) 12972690.

(1)

(2)

(3)

(4)

(5)

(6)

TEM

SMR

NSN

PART

DESCRIPTION AND

NO

CODE

CAGEC

GROUP 04 LOWER RECEIVER AND BUTTSTOCK ASSEMBLY (M16A2) 9349100,

(M4) 9390011, AND (M4A1) 12972690 FIG C-11 LOWER RECEIVER AND BUTTSTOCK ASSEMBLY

1

PAOZZ

5360009926665

19204

8448629

SPRING, HELICAL, COMP ACTION (M16A2)

UOC:AR8

1A

PAOZZ

5360012338617

19200

9390022

SPRING, HELICAL, COMP COMPRESSION

UOC:AS1, AY6

2

PAOZZ

1005009373078

19200

UOC:AR8

2A

PAOZZ

1005012313138

19200

9390023

BUFFER ASSEMBLY (M4 AND M4AI)

UOC:AS1, AY6

3

AFFFF

19200

UOC:AR8

3A

AFFFD

19200

UOC:AS1

3B

AFFFF

19204

UOC:AY6

4

PAFZZ

1005009926649

19200

8448595

SEAR

5

PAFZZ

5340012258339

19200

9381367

SELECTOR, FIRE CONTROL

6

PAFZZ

5360000562246

19204

8448633

SPRING, HELICAL, COMP COMPRESSION,

BOLT CATCH

7

PAFZZ

1005000562247

19204

8448634

PLUNGER, BOLT CATCH

8

PAFZZ

1005000179548

19200

8448628

CATCH, BOLT

9

PAFZZ

5315008123312

96906119

MS16562-119

PIN, SPRING , BOLT CATCH

10

PAFZZ

1005000562201

19204

8448638

CATCH, MAGAZINE

11

PAOZZ

5360009926655

19204

8448586

SPRING, HELICAL, COMP COMPRESSION,

TAKE DOWN/PIVOT PIN (M16A2)

UOC:AR8

11A

PAOZZ

5360009926655

19204

8448586

SPRING, HELICAL, COMP COMPRESSION

UOC:AS1

12

PAOZZ

5315009926654

19204

8448585

PIN, STRAIGHT, HEADLE DETENT,

TAKEDOWN PIN (M16A2)

UOC:ARS

12A

PAOZZ

5315009926654

19204

8448585

PIN, STRAIGHT, HEADLE HEADLESS (M4

AND M4A1)

UOC:AS1, AY6

13

PAFZZ

5360009927301

19204

8448637

SPRING, HELICAL, COMP COMPRESSION,

MAGAZINE CATCH

14

PAFZZ

1005009927302

19204

8448636

BUTTON, MAGAZINE CAT CATCH

15

PAOZZ

5315000179537

19204

8448621

PIN, GROOVED, HEADED (PIVOT PIN)

16

PAFZZ

5340011457910

19200

9349114

LEVER, LOCK-RELEASE SEMI (M16A2 AND

UOC:AR8, AS1

16A

PAFZZ

1005009990406

19200

UOC:AY6

17

PAFZZ

5340011441499

19200

9349113

LEVER, LOCK-RELEASE , BURST (MI6A2

(1)

(2)

(3)

(4)

(5)

(6)

ITEM

SMR

NSN

PART

DESCRIPTION AND

NO

CODE

CAGEC

NUMBER

USABLE ON CODE (UOC)

UOC:AR8, AS1

18

AFFFF

19200

9349115

TRIGGER ASSEMBLY (M16A2)

UOC:AR8

18A

AFFFF

19200

12972697

TRIGGER ASSEMBLY (M4)

UOC:AS1

18B

AFFFF

19200

12972698

TRIGGER ASSEMBLY (M4A1)

UOC:AY6

19

PAOZZ

1005011484805

19200

9349127

GRIP, RIFLE PLASTIC, BLACK

20

PAOZZ

5310005273634

96906

MS35335-61

WASHER, LOCK , RIFLE GRIP

21

PAOZZ

5305012681191

88044

AN501D416-18

SCREW, MACHINE , RIFLE GRIP

22

PAOZZ

5360009927292

19204

8448516

SPRING, HELICAL, COMP SAFETY

23

PAOZZ

1005009926667

19204

8448631

DETENT, SAFETY

24

PAFZZ

5315009927309

19204

8448609

PIN, GROOVED, HEADLES TRIGGER AND

HAMMER

25

PAFZZ

5315009926650

19204

8448599

PIN, GROOVED, HEADLES , AUTOMATIC SEAR

26

PAFZZ

5315009926653

19204

8448584

PIN, GROOVED, HEADED (M16A2)

27

PAOZZ

5365012672169

19200

12597640

SPACER, STEPPED (M16A2)

UOC:AR8

28

PAOOO

1005011354973

19200

9349119

BUTTSTOCK ASSEMBLY, (M16A2)

UOC:AR8

28A

AOOOO

19200

9390012

BUTTSTOCK ASSY (M4 AND M4A1)

UOC:AS1, AY6

29

PAOZZ

5305011478585

19200

9349128

SCREW, MACHINE , BUTTCAP (M16A2)

UOC:AR8

30

XAFFA

19200

9349101

LOWER RECEIVER AND RECEIVER

EXTENSION ASSEMBLY (M16A2)

UOC:AR8

30A

XAFFA

99999

NPN

LOWER RECEIVER ASSY ASSEMBLY (M4)

UOC:AS1

30B

XAFFA

99999

NPN

LOWER RECEIVER ASSY (M4Al)

UOC:AY6

END OF FIGURE..

UOC:AY6

END OF FIGURE..

12598617 M16

Change 3

Figure C-12. (M16A2) Buttstock Assembly 9349119.

1 PAOZZ

2 PAOZZ

3 PAOZZ

4 XAOZZ

5 PAOZZ

6 PAOZZ

7 PAOZZ

1005012288504 19200 9381380

1005011467685 19200 9349130

5340004633892 19200 8448653

19200 9349121

1005004030964 19204 8448652

5315004633894 19204 8448655

5305011441494 19200 9349120

GROUP 0401 (M16A2) BUTTSTOCK

ASSEMBLY 9349119 FIG C-12 (M16A2) BUTTSTOCK ASSEMBLY

DOOR ASSEMBLY, THUMB

UOC:AR8

PLATE, BUTT, SHOULDER GUN STOCK

UOC:AR8

HINGE, ACCESS DOOR BUTT PLATE

UOC:AR8

BUTTSTOCK

UOC:AR8

SWIVEL, SLING, SMALL

UOC:AR8

PIN, STRAIGHT, HEADLE HEADLESS,

ACCESS DOOR

UOC:AR8

SCREW, MACHINE BUTT PLATE

UOC:AR8

END OF FIGURE

1005011484805Safety Selector 9381367

Change 4

Figure C12A

(M4 and M4A1) Buttstock Assembly 9390012.

1

PAOZZ

1005012338636

19200

9390013

2

PAOZZ

5315012338608

19200

9390025

3

PAOZZ

5360012338616

19200

9390027

4

PAOZZ

5340012338638

19200

9390014

5

PAOZZ

5310012338626

19200

9390026

6

PAOZZ

5315008439487

96906

MS16562-202

GROUP 0401A (M4 AND M4A1) 9390012

BUTTSTOCK ASSEMBLY FIG C12A (M4 AND M4A1) BUTTSTOCK ASSEMBLY

STOCK, GUN, SHOULDER

UOC:AS1, AY6

PIN, SHOULDER, HEADLE

UOC:AS1, AY6

SPRING, HELICAL, COMP COMPRESSION

UOC:AS1, AY6

LEVER, LOCK-RELEASE

UOC:AS1, AY6

NUT, SELF-LOCKING, RO

UOC:AS1, AY6

PIN, SPRING

UOC:AS1, AY6

END OF FIGURE

C12A-1

+1 0

Responses

  • aziz
    How to adjust rear sight m16a2/m16a carbine?
    5 years ago
  • marina kruger
    How to disassemble lower reciever on m16a2?
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