| STOPPAGE |
CAUSE |
CORRECTIVE ACTION |
| Failure to
Feed |
Dirty or dented
magazine.
Weak or broken magazine spring.
Worn or broken magazine catch.
Magazine spring assembled backward.
Bent magazine follower. |
Clean or replace
magazine.
Replace magazine.
Replace part.
Assemble properly.
Replace magazine or straighten follower. |
| Failure to
Chamber |
Dirty chamber.
Dented cartridge case.
Weak recoil spring.
Obstruction in chamber.
Lack of Lubrication.
Extractor applying too much pressure on the right side of a metal cartridge case* |
Clean chamber.
Remove dented cartridge.
Replace recoil spring.
Clean chamber.
Lubricate properly.
Change to brass ammunition. |
| Failure to
Lock |
Lack of lubrication of
operating parts.
Burred or dirty barrel locking ribs or locking recesses.
Weak recoil spring.
Broken barrel link.
Extractor applying to much pressure on the right side of the cartridge.* |
Lubricate appropriate
parts.
Clean parts and remove burrs.
Replace recoil spring.
Replace barrel link.
Change to brass ammunition. |
| Failure to
Fire |
Faulty ammunition.
Broken firing pin.
Bent or broken hammer strut.
Weak mainspring. |
Change ammunition.
Replace firing pin.
Replace hammer strut.
Replace mainspring. |
| Failure to
Unlock |
Broken barrel link.
Broken barrel link pin.
Broken barrel lugs. |
Replace barrel link.
Replace barrel link pin.
Replace barrel. |
| Failure to
Extract |
Broken or worn
extractor.
Dirty or pitted chamber. |
Replace extractor.
Clean chamber or replace barrel. |
| Failure to
Eject |
Faulty extractor (does
not position the cartridge case for ejection).
Broken Ejector. |
Replace extractor.
Replace ejector. |
| Failure to
Cock |
Worn full cock notch
on hammer.
Worn sear.
Defective sear spring.
Worn or broken disconnector, |
Replace hammer.
Replace sear.
Replace sear spring.
Replace disconnector. |
