FILE – In this Oct. 4, 2017, file photo, shooting instructor Frankie McRae demonstrates the grip on an AR-15 rifle fitted with a “bump stock” at his 37 PSR Gun Club in Bunnlevel, N.C. The Brady Center to Prevent Gun
FILE – In this Oct. 4, 2017, file photo, shooting instructor Frankie McRae demonstrates the grip on an AR-15 rifle fitted with a “bump stock” at his 37 PSR Gun Club in Bunnlevel, N.C. The Brady Center to Prevent Gun Violence filed the lawsuit on Friday, Oct. 6, 2017, against the makers and sellers of “bump stocks,” which use the recoil of a semiautomatic rifle to let the finger “bump” the trigger, allowing the weapon to fire continuously. The devices were used by Stephen Paddock when he opened fire on a country music festival in Las Vegas, killing dozens of people. (AP Photo/Allen G. Breed, File)