Federal authorities in Texas cracking down on machine gun-conversion 'switches'

Officials with the U.S. Attorney’s office and the Bureau of Alcohol, Tobacco, Firearms and Explosives on Monday said they're cracking down on the rising use of illegal machine gun-conversion devices. U.S. Attorneys from across the state held simultaneous press conferences, including one in San Antonio, to unveil “Operation Texas Kill Switch,” a statewide initiative targeting devices known as "switches" that can convert legally procured commercial firearms into a fully automatic weapon weapons that can fire more rapidly than some military-grade guns.