Technical data

TM 9-1005-319-23&P 0008
0008-8
PMCS PROCEDURES - Continued
Table 1. Preventive Maintenance Checks and Services for
M16 Series Rifles and M4 Series Carbines - Continued.
Item
No.
Interval
Man-
Hour
Item To Be
Checked or
Serviced
Procedure
Equipment Not
Ready/Available
If:
3
(Cont)
Quarterly
(Cont)
Upper Receiver and
Barrel Assembly
(Handguard
Assemblies) (Cont)
M16A3, M16A4,
M4, and M4A1 Only
b. Remove lower handguard (10)
(see WP 0015) and check for
loose or missing heat shield.
Check rear flange of upper
handguard assembly (11) for
cracks. Check upper
handguard assembly for
screw/retainer and forward leaf
spring outside of handguard
cap. Check for presence of pins
securing forward leaf spring
and rear clamp
(M16A3/M16A4/M4/M4A1).
Check for presence of barrel
stop assembly (M16A3/M16A4).
b. Upper hand-
guard assembly
or lower hand-
guard missing.
Heat shield of
lower hand-
guard missing.
Rear flange of
upper hand-
guard assembly
displays cracks.
Screw/retainer,
forward leaf
spring, or rear
clamp missing
(M16A3/M16A4/
M4/M4A1).
Barrel stop
assembly
missing
(M16A3/
M16A4).
1 v s 0 3 8
1 1
1 0