And the printers aren’t cheap. The 3D printer Cody Wilson, founder of the organization Defense Distributed, used in 2013 to make the first 3D printed plastic gun cost $9,900.

But 3D-printed guns vary a lot. Some models — like the 3D-printed gun company Defense Distributed’s “Liberator” — can be made almost entirely on a 3D printer.

The Oakland County Sheriff's Office arrested a man over the weekend for carrying a concealed weapon and 3D-printing a gun and conversion devices to turn weapons fully automatic.

A Grayslake man used 3D printers to illegally manufacture firearms and machine gun conversion devices, police said Thursday. Charles A. Best, 31, of the 200 block of Highland Drive, is facing ...

Evergreen man accused of using furnace, 3D printer to make machine gun devices Amid rise in federal prosecutions, Conecuh County man is first accused of manufacturing Glock switches ...