Technical data

TM 9-1005-319-23&P 0008
0008-22
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:
6
(Cont)
Quarterly
(Cont)
Lower Receiver and
Buttstock Assembly
(Serviceability
Check) (Cont)
Rifle Only
NOTE
A small amount of side-to-
side, up-and-down, or
rotational movement of
buttstock assembly is
acceptable.
g. Check buttstock assembly (53)
for forward to rear movement
and/or a 1/32 in. (0.079 cm) gap
between buttstock assembly
and lower receiver (54). If
forward to rear movement is
present and/or a 1/32 in. (0.079
cm) gap appears, tighten
machine screw (55). If still not
tight, remove buttstock
assembly and check for loose
receiver extension (56). If
receiver extension is loose,
repair. If not loose, replace
buttplate (57), using new
machine screw.
g. Lower receiver
extension
cannot be
tightened.
h. Check buttplate (57) for cracks
or damage.
(1) Cracks are visible around
the buttplate mounting hole
while screws are mounted.
SH - Cracks are visible
around mounting holes
when installed on rifle.
(2) Cracks or separations
around door assembly are
visible when the door
assembly is closed. SH -
Cracks are visible when
door assembly is closed.