WriteON
Member
Has to be the PSI 30cal bolt. Aside from it is unique...It is easy to make. Never fails. It's almost impossible to be too long or too short. There is a nice cushion for advance/retract. I was working on a batch of EDC all week, Everyone is borderline for the retraction or slight protrusion when retracted. Had to adjust everyone. Made few 30cal bolts afterward and began to breath normal.