A simple printable jig for turning AR FCG style hammer springs
LBRY Tags: fosscad; 3d2a; printing; spring; 3d printed
AR-15 Lower Jig v3.1
AR15 REAR PICATINNY RAIL CONNECTION
A simple printable jig for turning AR FCG style hammer springs
LBRY Tags: fosscad; 3d2a; printing; spring; 3d printed