KSC USP .45 firing problems

[militia]

i used the search first and couldnt find anything to help me.




Problem:

i have a upgraded metal barrel and slide on my usp. it worked fine when the slide and barrel were first put in but over time it started jamming sometimes. but now doesnt shoot anything at all. the blowback action works and all, but it just loads the bb in the hop and thats it, doesnt shoot out. can anyone help me? im not to familiar with GBB`s


thanks

[Fireboy]

I'm having the exact issue ATM. Still trying to find a solution.

[swatt13]

this is tricky, but did you inner barrel slide into the outer barrel/ chamber block correctly? i had this issue with mine and the very end of the outer barrel was not drilled out enough to allow the inner barrel to insert all the way, it only stopped it about 1/16, or a 1/8 inch. so the pin would not hold the c-clip on the hopup in place. the pin was actually behind rather than in front. sop when you fired, the nozzle would go into the hopup and pull the hopup and barrel back when the slide cycled.
i suspect that is your problem. just take a drill bit and drill out the front of the barrel and everything should seat properly.