Manual

worn, or remaining in an open position. It can
d. Operating parts which fail to move fully to
be corrected by replacing the trigger assembly.
the rear (short recoil) are caused by-
c. The safety may release when pressure is ap-
(1) Valve leak in gas cylinder lock screw.
plied to the trigger.
This can be caused by -a
broken safety or by the trigger stop on the safety
being worn. It can be corrected by replacing the
safety.
(2)
(3)
(Valve not fullySeated.)
Defective operating rod spring.
Undersized piston.
(Caused by the use
of abrasives when cleaning the piston.)
Table II. Stoppages, Their Cause8 and Remedies
Btoppagea
Failure to feed___________
Failure to chamber-___-__
Failure to lock___________
Failure to fire____________
Failure to unlock_________
Failure to extract_________
Failure to eject______--_-_
Failure to cock_________-_
C!W&l
I
Remedy
Lack of lubrication of operating parta_ _ _ _ _ _ _ _ _ _
Defective or worn parts______,_______________
Shortrecoil_________________________________
Lack of lubrication of operating parts__ _ _ _ _ _ _ _ _
Dirty chamber-____________________________-
Defective ammunition____________________-__
Lack of lubrication of operating parta__________
Dirty chamber_____________________________-
Dirty locking recesses___________________..____
Weak operating rod spring____________________
Defective ammunition_______________________
Defective firing pin__________________________
Defective trigger housing group_____-_________
Dirty chamber______________________________
Lack of lubrication of operating par&_________
Insuflicientgas______________________________
Dirty chamber______________________________
Dirty ammunition___________________________
Broken extractor________________________-___
Broken ejector or spring______________________
Short recoil_________________________________
Defective trigger housing group_______________
Short recoil_________________________________
Clean and lubricate parts (fig. 33).
Replace parts.
See paragraph 19d.
Clean and lubricate parts.
Clean chamber.
Replace ammunition.
Clean and lubricate parts.
Clean chamber.
Clean receasea.
Replace spring.
Replace ammunition.
Replace firing pin.
Repair trigger housing group.
Clean chamber.
Clean and lubricate parts.
Tighten gas cylinder lock screw.
Clean or replace worn parts.
Clean chamber.
Replace ammunition.
Replace extractor.
Replace ejector or spring.
See paragraph 19d.
Repair trigger housing group.
See paragraph 19d.
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