Technical data

TM 9-1005-319-23&P 0008
0008-5
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:
Selector Lever -
SEMI
c. Place selector lever (7) in SEMI
position. Pull trigger (8).
Hammer falls.
c. Hammer does
not fall.
NOTE
For the purpose of the
following test, "slow" is
defined as 1/4 to 1/2 the
normal rate of trigger
release.
d. Hold trigger (8) to the rear,
charge weapon, and release
trigger with a slow, smooth
motion, without hesitations or
stops, until the trigger is fully
forward (an audible click should
be heard). Hammer should not
fall until trigger is pulled.
d. Hammer falls.
e. Repeat the SEMI position test
five times.
e. Weapon mal-
functions
during any of
these five tests.
M16A2, M16A4, and M4 Only
Selector Lever -
BURST
f. Place selector lever (7) in
BURST position. Charge
weapon and squeeze trigger (8).
Hammer should fall.
f. Hammer does
not fall.
g. Hold trigger (8) to the rear, pull
charging handle to the rear,
and release it three times.
Release trigger. Squeeze
trigger. Hammer should fall.
NOTE
Burst disconnector should
hold hammer to the rear
when it engages deep notch
of burst cam.
g. Hammer does
not fall.