Bump stocks use a semiautomatic's recoil to allow it to slide back and forth while "bumping" the shooter's trigger finger, resulting in rapid fire. The Supreme Court previously had turned away some challenges to the bump stocks prohibition. Cargill sued to challenge the rule, which required him to surrender his two bump stocks. That decision "threatens significant harm to public safety," the Justice Department said in a filing to the Supreme Court. "Bump stocks allow a shooter to fire hundreds of bullets a minute by a single pull of the trigger.

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Persons: George Frey, Donald Trump, Joe Biden's, Michael Cargill, Cargill, Richard Samp, Samp, Biden, Andrew Chung, Will Dunham Organizations: REUTERS, U.S, Supreme, Trump, Alcohol, Tobacco, Firearms, Explosives, U.S . Justice Department, National Firearms Act, New Civil Liberties Alliance, Cargill, ATF, U.S . Justice, Circuit, Justice Department, National Rifle Association, Thomson Locations: Orem , Utah, U.S, Austin , Texas, Las Vegas, New Orleans, United States, New York