P320 AXG KATANA INSTALL INSTRUCTIONS
it is common for AXG frame threads to not be fully tapped or clogged with anodizing debris.We recommend clearing the threads by slowly working the screw with a drop of oil & turning it Clockwise 1/4 turn, then Counter Clockwise 1/4 turn, until the threads are clear.If you do meet heavy resistance a tap is the best way to clean the frame threads. As the hole/threads are at an angle & the mag well sits flush, the screw will not sit flush with the frame but keeps tension on the back edge of the KATANA hole.