The Supreme Court on Friday overturned the Bureau of Alcohol, Tobacco, Firearms, and Explosives' (ATF) ban on a gun attachment that allows shooters to fire weapons at nearly the rate of a machine gun.
Why it matters: Under former President Trump, the ATF attempted to ban the attachment, called a "bump stock," after a gunman used it in the 2017 Las Vegas shooting — the deadliest mass shooting in U.S. history. Now, they will be back on the market again.