If you want to print your own AR-15 lower receiver, HaveBlue has uploaded the schematic to Thingiverse. HaveBlue tried to use the same lower receiver to make a full-blown .223 AR-15/M16 rifle, but ...

Discovered in a junkyard, a very old M16 rifle shows the wear of years of neglect and exposure. This detailed restoration brings the rifle back to life, with every step focused on precision and care.

However, the T65 is hardly a clean-slate design, practically copying the M16 design in the lower receiver and heavily emulating other elements in the upper receiver.

HaveBlue's custom creation is a .22-caliber pistol, formed from a 3D-printed AR-15 (M16) lower receiver, and a normal, commercial upper. In other words, the main body of the gun is plastic, while ...