"Glock switches," small devices capable of turning almost any handgun into a machine gun, are increasingly being found among seized firearms in the Phoenix area, according to the Bureau of Alcohol, ...

Part of the gun that the police believe was used to kill the C.E.O. of UnitedHealthcare was made by a 3D printer using a popular design found online. By Thomas Gibbons-Neff and Aric Toler At first ...

A tiny, cheap device known as a "Glock switch" or a "machine gun conversion device" allows criminals to convert a handgun into a machine gun and unleash 30-plus rounds in seconds, federal authorities ...

When federal agents searched a home in Northern Kentucky, they found nearly a dozen devices meant to turn a semi-automatic firearm into a fully automatic one, prosecutors said. Not only did ...

In 1987, a 22-year-old Venezuelan named Jorge Leon invented a small metal insert that could turn the Glock 17 semi-automatic pistol into a fully automatic machine gun with the flick of a switch. Leon ...

INDIANAPOLIS — A Franklin man will spend two years in federal prison for 3D printing and trafficking firearms and Glock switches. During the investigation, 28-year-old Alexander Clark was seen selling ...

The ATF and Cincinnati police said Wednesday that they are finding guns illegally modified to make them fully automatic on a weekly basis. Also called a "chip" or "auto sear," it's a small device that ...

A Baton Rouge man and woman were arrested on Tuesday for allegedly printing, constructing and selling Glock switches after authorities searched their apartments, according to police. The pair also ...