What to know about bump stocks and the Supreme Court ruling striking down a ban on the gun accessory

WASHINGTON (AP) — The gun accessory the Supreme Court just ruled on allows a rifle to fire dozens of bullets within seconds. The court on Friday struck down a 2019 ban on bump stocks, which were used in the deadliest shooting in modern American history. Bump stocks replace the part of a rifle pressed against the shooter’s shoulder. When someone fires a semiautomatic weapon fitted with a bump stock, it uses the gun’s recoil energy to rapidly and repeatedly bump the trigger against the shooter’s finger. Bump stocks were banned after the 2017 massacre in Las Vegas, where a man fired 1,000 rounds into a crowd from a hotel window in 11 minutes, killing dozens of people.