Visually and manually examine the cartridge rollers for
compliance with 22.214.171.124.
126.96.36.199.11 Barrel assembly with bipod assembly (two per
gun). Disassemble barrel assembly with biped assembly from the
receiver assembly. Assure that with barrel lock in the vertical
position, disassembly from the receiver is readily accomplished.
Assemble and disassemble spare barrel assembly with biped to and
from the receiver.
Examine the barrel assembly for compliance with 188.8.131.52.
Visually examine the barrel assemblies for mutilations,
cracks, and seams. Visually examine bore and chamber for
foreign matter, corrosion, pits, burrs, bulges, and
The chrome plating shall be free of
nodules, anode burns and flaking or stripping.
Visually examine barrel assemblies for presence of proof
and magnetic particle inspection marks on the barrel
assembly and tube assembly (see drawing 7269028 and
Visually and manually examine gas cylinder for compliance
with 184.108.40.206 paragraph b.
Disassemble gas cylinder nut and extension, lock washers
and piston. Visually examine piston and lock washers for
cracks, burrs, or deformations. Reassemble assuring that
head of piston is assembled toward breech (rear) end.
Examine front sight for compliance with 220.127.116.11 paragraph
Visually examine the socket for compliance with 18.104.22.168
paragraph d and presence of manufacturer's identification
in accordance with drawing 7269041.
Manually examine biped assembly for compliance with
22.214.171.124 except that load requirements shall not be
checked during this examination.
Examine flash suppressor for compliance with 126.96.36.199.
188.8.131.52.12 Gun adapter and quick release pin. Visually and
manually examine the gun adapter and quick release pin for
compliance with 3.3.11.