Technical data

TM 9-1005-319-23&P 0015

0015-21

22. Release handguard slip ring (2) and confirm that it slides forward evenly around rear flange of upper

handguard assembly (5). Note that two alignment pins automatically interface with cut-outs in barrel

nut assembly (19) at 10 and 2 o'clock positions to remove rotational play of handguard assembly.

Install and tighten slotted screw (4) to medium tight.

NOTE

Do not remove thermal liner from lower handguard. Orient lower handguard by

confirming that arrow on its inner surface points toward muzzle of weapon.

1 v s 1 2 7

Figure 29. Installation of Lower Handguard (M16A3/M16A4/M4/M4A1).

23. Insert front edges of lower handguard (6) into forward handguard cap at angle shown. Compress

handguard slip ring (2) while pivoting lower handguard up and into its final position.

24. Release handguard slip ring (2) and confirm that it engages around rear flange of lower handguard (6).

M16A2 RIFLE ONLY

NOTE

Refer to TM 9-1005-319-10 for "buddy system" procedure for installing handguard

assemblies.

2 9

1 v s 1 2 8

Figure 30. Installation of Upper Handguard Assembly (M16A2).

25. Install top of upper handguard assembly (1) in tube cap (29) while pushing down on handguard slip

ring (2). Push bottom of upper handguard assembly in place and release handguard slip ring to lock

handguard assembly in place.