Police said an "auto-sear" is a device that allows semi-automatic handguns to become fully automatic. Officers found two "auto-sears" inside the residence. Officers took a 17-year-old boy into ...

The auto-sear turns a semi-automatic gun into an automatic weapon. During a demonstration by the ATF, one pull of the trigger fired off 30 rounds in 2.19 seconds. Even for veteran law enforcement ...

"The search yielded an extensive collection of weapons, including multiple 3D-printed "ghost guns" without serial numbers, semi-automatic rifles, handguns, shotguns, an AK-47 semi-automatic rifle ...

an AK-47 semi-automatic rifle and more. Investigators also found large-capacity magazines, 18 suppressors, 74 auto sears or devices that convert semi-automatic firearms to fully automatic firearms.