Just got done test firing my PA-10 after installing a Superlative arms adjustable gas block, correct length (12.06 inch) gas tube, and a JP enterprises carbine length polished recoil spring.
The gun ran fine unmodified, replaced the H2 buffer with an H3, and it ran fine. I replaced the gas tube, block, and drive spring at the same time, and began the gas block adjustment process with the gas turned all the way off, as expected the bolt didn't move, went through the process of one turn out, and fire until it started ejecting the spent case, but the bolt wouldn't lock back, or strip another round out of the magazine. That is where progress stopped, the adjustment screw is turned all the way out, and it will eject the spend case, but will not feed or lock back.
Where did I go wrong with this? It seemed pretty straightforward, but I seem to have run inti an if it's not broke, don't fix it moment. Anyone have any suggestions on getting this thing running again???
Thanks in advance Gentlemen.