THE DEFINITIVE GUIDE TO SEMI-AUTO

To use our barrel, you get rid of the manufacturing facility trunnion block (use heat to remove the three screws) and transfer the bolt hold open parts to our trunnion. Then assemble in to the factory receiver.† NOTE: The receiver-mounted, Picatinny-model rail is made to support most optics and optic mounts meant for use with Picatinny/ MIL-STD 1