AR15 Lower Receiver Reference (Anotated F3D, STEP, STL)

AR15 lower receiver based on D. Snider's PDF. Everything's annotated in the .F3D file, so modifications should be trivial. I've checked everything very thoroughly and all the dimensions seem to be correct. I also added the HK style fire/safe markings cause why not. LBRY Tags: guns; 3d printed; art