catch release mag button for m4 or ar15 airsoft replicas

thingiverse

This replaces the original button of specnaarms airsoft replicas. You can also use it with others m4 or ar15 replicas with a 2mm screw. Just reuse the screw and the spring. You probably will have to sand the piece a little so that it fits well in the hole. It's because of the differences between product series. You can check my thingiverse page to have more 3d print for specna airsoft