In 1934 the United States passed a law banning automatic weapons or machine guns in the United States, known as the National Firearms Act. There are 5 classes of weapons that are restricted by this law:
MachineGuns, Short barreled rifles, Short barreled shotguns, Silencers and Destructive Devices
In 1968 the United States passed the Gun Control Act, was signed into law by President Lyndon B. Johnson on October 22, 1968[9] banning mail order sales of rifles and shotguns and prohibiting most felons, drug users and people found mentally incompetent from buying guns.
The Firearms Owners' Protection Act of 1986 amended the Gun Control Act with additional restrictions on how the ATF could conduct itself given the two laws.
Jeremiah Cottle ,a Veteran, decided these laws were too restrictive specifically he wanted a fully automatic of the AR-15 which in the military is called an M-16. So he submitted his proposal for the Bump-Stock to the ATF, which declared it legal. In 2010 Cottle created SlideFire, a company whose sole reason for existence is to create devices that convert Semi automatic Weapons of War into Automatic Weapons of Death
