I have a cz712 with adjustable stock. by the way it keeps getting loose. my gun jambs constantly. I have to bang it on the ground on but stock to get bolt to go back . It seems that bolt goes too far forward because barrel seems to move forward a bit causing jambs. I tighten the nut on mag tube best i can but no avail . am i missing something is there something that will hold barrel down better ? Is there some spacer that goes under mag nut to hold the ring on barrel down. your help is appreciated.
