Technical data

TM 9-1005-319-23&P 0008
0008-14
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:
4
(Cont)
Quarterly
(Cont)
Upper Receiver and
Barrel Assembly
(Serviceability
Check) (Cont)
i. Hold barrel (13) at 40-degree
angle (muzzle down). Pull
charging handle (5) to rear.
Hold bolt carrier assembly (6)
to rear and push charging
handle forward. Release bolt
carrier assembly. The bolt
carrier assembly should close
and lock under its own weight.
If it does not, remove the bolt
assembly (22) from the key and
bolt carrier assembly (23) and
slide the key and bolt carrier
assembly (without bolt) back
and forth in the upper receiver
and barrel assembly. If the gas
tube (15) hits the carrier key
(24) on the inside of the upper
receiver (14), or if the gas tube
binds in the carrier key, correct
the malfunction by adjusting
(slightly bending) the gas tube
in the area of the handguard
assemblies.
i. Adjustment
does not correct
the malfunction.
1 v s 0 4 1
5
1 4
2 2
1 3
1 5
2 4
6
2 3