US bans 'bump stocks' on semi-automatic weapons

The US government said Tuesday it was banning bump stocks, devices that allow semi-automatic weapons to fire like machine guns and that were used in a mass shooting in Las Vegas in October 2017.The devices, which harness the recoil of a semi-automatic rifle's discharge to make the trigger fire faster, effectively turn the weapons into machine guns, which are illegal, the Justice Department said.Bump stocks allow a "shooter of a semi-automatic firearm to initiate a continuous firing cycle with a