188.8.131.52.13 Receiver assembly group.
Visually and manually examine receiver assembly group for
compliance with 3.3.13.
Visually and manually examine cocking handle guide,
screw; and lock washer for compliance with 3.3.9.
Manually examine retention and free movement of cocking
handle assembly for compliance with 3.3.9.
Visually and manually examine spring action of retaining
latch on cocking handle assembly for compliance with
Examine carrying handle assembly for compliance with
Visually and manually examine barrel lock for compliance
Visually and manually examine rear sight assembly for
compliance with 3.3.2.
184.108.40.206.14 Headspace. Prior to reassembly of machine gun,
check for headspace requirement (see 3.4.1) using the methods
specified in 4.5.1.
220.127.116.11.15 Reassembled machine guns.
While reassembling barrel assembly with biped assembly to
receiver assembly, examine to assure when barrel lock
lever is set in closed position, the barrel assembly is
retained in receiver (see 3.3.3).
Reassemble machine gun without the use of tools and hand
operate to assure proper function of all parts.
Manually examine safety for proper function. Safety must
move readily, with positive retention in the "D" and "F"
positions. When the trigger is pulled, the sear shall
not release the operating rod assembly when safety is in
"S" position and must release operating rod assembly when
safety is in "F" position.
Visually examine the machine gun for presence of one each
proof mark and magnetic particle inspection (4.5.1) on
the bolt assembly and two each proof marks and magnetic
particle inspection marks on both the assigned and spare