I have a USP Tactical that I bought a few months ago but haven't had the chance to use too much. I brought it out today to fire a couple mags through it, and noticed something's wrong. The first couple of shots seem to be normal (though I noticed a big cloud of gas) and then the power quickly trails off, until the gun won't cycle and the magazine still has ~half its BBs left.
This is the NS2 system and is completely stock except for an NPAS valve, which worked fine last I tested, and is tuned to about 270 FPS. Took it all apart and verified all the internal parts were moving freely, and they are, but beyond that..
Any ideas? I'm really not that good with gas guns yet, no idea where to even start on this one.. Any help appreciated!
Edited by xzivr, 19 November 2012 - 09:20 PM.