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Gun only feeds when hop is forward

Try other mags n crap

New nozzle too long

Or

Worn tappet plate

Nozzle is not clearing to chamber bb is most likely issue

 
what nozzle is in there - a SCAR one @ 28.5mm or something like G36/AUG @ 24mm

should be about 21.3 to 21.45mm aprox for most m4's

that is some distance = some mofo nozzle or something

correct nozzle length is critical, yes you can do a few mods n tweaks but ffs not THAT much...

its not clearing, how would i sand it evenly

With an angle grinder more like than a dremmel or file

measure nozzle and test against bucking blah blah blah.....

should really use something as close as possible to correct nozzle length

it would help if you explain exactly what you or the other guy did or didn't do or how you came about this odd mofo setup

(reason I ask is often a number of things took place and might be more than just one thing that is out of whack - so as much info & honesty as possible will help from the start)

 
Last edited by a moderator:
Could be a worn/misaligned tappet plate also, there's so many variables here. Chances are you just have a nozzle that's too long though.

 
thanks everybody. sanded nozzle using dremel. perfect.

 
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