Bought a 6.8 barrel and built up an AR. Having a heck of a time getting it to fully cycle. It was short stroking. Changed bolt carriers (not bolts) and it now will cycle enough to pick up the next round, but won't quite cycle far enough to lock back after the last shot.
I see you can remove the plastic end on the buffer and, I assume, remove weights inside, or add. Is that a feasible remedy?