4 . 4 . 2 . 2 . 1 8 Gas cylinder group.
( a ) Visually and manually examine the gas cylinder group to
d e t e r m i n e compliance with 3.3.9.
( b ) Examine the alinement of the gas port holes in the gas cylinders
t h e gas cutoff valve, and the barrel using inspection equipment in accordance
with Drawing A11015316.
(c) D i s a s s e m b l e gas cylinder plug and visually examine threads
o f plug and gas cylinder for evidence of cross-threading or mutilations.
( d ) Reassemble gas cylinder plug using light finger pressure;
if binding results, use assembly device C11015427 t o prevent cross-
t h r e a d i n g and mutilation of threads (see 3.3.9).
220.127.116.11.19 Front sight.
( a ) Manually examine t h e f r o n t s i g h t t o determine compliance
( b ) Visually examine t h e f r o n t s i g h t t o a s s u r e that there is
no overhang on the tenon of the flash suppressor.
(a) Manually examine the flash suppressor to determine com-
p l i a n c e with 3.3.7.
( b ) Visually examine the flash suppressor to assure freedom
f r o m burs, cracks, and mutilations.
( c ) Examaine alinement of the flash suppressor to the barrel
using inspection equipment in accordance with Drawing C7271723 or
( a ) Visually examine the barrel to determine compliance with
( b ) Visually examine the barrel to assure presence of proof
and magnetic particle inspection marks (see Drawing F7790190).
18.104.22.168.22 Rifle assembly.
(a) Reassemble the rifle to assure reassembly can be accomplished
w i t h o u t the use of hand tools.