Originally Posted by JaKaL
Also, if you have blowback issues with an o-ring bolt either the gun is horribly out of time or you're not holding the pump forward when you shoot. Do you do the semi-player-trying-out-pump-play thing and leave your hand on the regulator? If so, stop it.
Always on the pump handle, and always in the forward position. I need to find a chrono and take my time tuning it.