AR15 Bolt Catch Install Scratch Guard

Tired of scratching the side of your lower receiver with the punch while you're installing the pesky roll pin? This guard protects the side of the receiver from the hammer and the punch. I initially made it for myself but I think it may help others as well. You can adjust the Z axis/length of the piece as you wish. Currently it fits on my aero and griffin armament lowers without issues. Billet receivers may need additional dimensional adjustment.