LAS VEGAS—The U.S. gun lobby, which has seldom embraced new firearms-control measures, expressed a willingness to support a restriction on the rifle accessory that enabled a Las Vegas gunman to strafe a crowd with bursts of sustained gunfire as if from an automatic weapon.
The gunman Stephen Paddock, police said, fitted 12 of his weapons with so-called bump-stock devices that allow semi-automatic rifles to operate as if they were fully automatic machine guns, which are otherwise outlawed in the United States.
