March 26 (UPI) -- A nationwide ban on bump stocks goes into effect Tuesday -- nearly 18 months after the mass shooting in Las Vegas that spawned it -- meaning gun owners must destroy the devices or turn them in to authorities.
Bump stocks increase a gun's rate of fire by using the recoil to have the gun fire continuously, nearly converting a semi-automatic weapon into a fully automatic machine gun. With a bump stock, some guns can fire between 400 and 500 rounds per minute. The devices have been opposed by lawmakers and President Donald Trump since the October 2017 Las Vegas shooting, in which Stephen Paddock used one to fire more than 1,000 rounds at concertgoers. He killed 58 people.
Beginning Tuesday, it's illegal to own, buy or sell a bump stock. There is no grandfather clause, either, meaning they must be turned in to the bureau of Alcohol Tobacco, Firearms and Explosives without compensation. Possession could result in a $250,000 fine or a year in prison.
"We are faithfully following President Trump's leadership by making clear that bump stocks, which turn semiautomatics into machine guns, are illegal, and we will continue to take illegal guns off our streets," then-acting Attorney General Matt Whitaker said in December.
"We still feel that the regulation is a factual misreading of the statute, and that ultimately we will be vindicated on it," said Michael Hammond, legislative counsel for Gun Owners of America.
Gun Owners of America has led the charge against bump stock ban with lawsuits in Washington state, Ohio, Utah and Michigan. The organization estimates more than 500,000 Americans own bump stocks. A federal court in Cincinnati has denied the group's request for a preliminary injunction.
Gun control advocates like the Brady Group say the ban is a much-needed safety measure.
"The strongest and best solution is for our congressional leaders to classify bump stocks as illegal machine guns once and for all so that our communities are no longer at risk from these destructive devices," said Brady Group spokesman Max Samis.
Survivors of the Las Vegas attack sued Slide Fire Solutions, the company that manufactured the bump stock used by Paddock. The suit accused the company of negligence and said the devices are a deliberate attempt to bypass regulations that outlaw automatic weapons. The case was dismissed in September, after the Justice Department had taken steps to ban bump stocks.