MARTINSBURG, W.Va. – In the basement research lab of the agency that regulates America's firearms, two dozen 3D printers hummed, stringing thermoplastic filament into computer-designed patterns that ...

Soto Melendez used a 3D printer to make Glock switches at his Park Hills home and another man sold the devices, prosecutors ...

WASHINGTON (AP) — Justice Department officials are turning to the 3D-printing industry to help stop the proliferation of tiny pieces of plastic transforming weapons into illegal homemade machine guns ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WASHINGTON (AP) — Justice Department ...