-! UNTESTED !- Please read the ReadMe file! Included are the SolidWorks, Step and 3mf files. This is ment to be mechined as it would NOT be safe to 3D-Print!. Striker should be Stainless Steel and the Rest can be 6065 Alm. This is a DD (Destructive Device) and is Subject to the NFA. LBRY Tags: 3d printed; gun; 37mm; nfa; fosscad