The sear in these semi-auto Uzis only acts on the linear striker, NOT the bolt, which is free to close after each shot. To "really" avoid "Rock 'n' Roll", carefully machine off the flange / collar from the side of the bolt-face that faces the magazine. This will mean that the case heads will slide across the bolt-face instead of "jumping back in" as the round chambers. IF something goes awry and the sear mech fails to rise into place, something interesting happens. Because the striker fully-forward, the head of a following round, stripped from the mag, will collide with the striker and the gun will stop.
Keep us posted.
Last edited by Bruce_in_Oz; 12-31-2021 at 09:10 PM.