Under new federal regulation, bump stocks are officially and finally banned.
The Trump administration has rolled out a new rule that classifies bump stocks as “slide-fire” devices, which allow a “shooter of a semiautomatic firearm to initiate a continuous firing cycle with a single pull of the trigger.” Therefore, they are considered illegal.
Bump stocks gained massive national attention after being used by the gunman who opened fire on Route 91 Harvest music festival, killing 58 people and injuring hundreds more. Such firearm attachments allow a semiautomatic weapon to shoot nearly as fast as a machine gun, as heard in the chilling footage from October 1, 2017. 
Current bump stock owners will have 90 days before the new rule takes effect — to either turn the devices over to the Bureau of Alcohol, Tobacco, Firearms and Explosives, or find a way to destroy them.
In addition, fully automatic machine guns remain illegal and strictly controlled in the U.S.
The final rule may be found here.
