According to the Bureau of Alcohol of Tobacco and Firearms, devices that turn handguns into machine guns are being found more often in metro Phoenix.

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

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

What is a Glock switch? Also called a "chip" or "auto sear," it's a small device that gets installed on the back of a Glock handgun.

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 thirty-plus rounds in seconds.

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.

Rejecting a recommendation of leniency negotiated by an Evergreen man’s attorney and prosecutors, a federal judge on Wednesday opted for harsher punishment in a case involving a 3D printer used ...

The shooting, which left four dead and 17 injured, is just the latest spurt of mass violence made possible by the small 3D-printed part known as a “conversion device,” “Glock switch” or ...

A raid at the house in Detroit may have stopped several so-called ghost guns from hitting the streets after uncovering an illegal 3D-printed gun operation.