With an estimated 20 to 24 million AR-15-style rifles in U.S. civilian hands, a mandatory buyback would be one of the largest firearms policy actions in American history.
The government orders people to hand in certain guns and pays them for it. Refusing to comply can result in fines or criminal charges.
Supporters argue buybacks can reduce access to high-powered rifles, while opponents view them as government confiscation of lawfully owned property protected by the Second Amendment.
Congress or a state legislature would need to pass a law defining which firearms are covered, setting compensation levels, and establishing deadlines and penalties for noncompliance.
Owners turn in covered firearms at designated sites and receive payment, often based on fair market value, while agencies like the ATF or local law enforcement process and destroy the weapons.
Any federal buyback would likely face court challenges under the Second Amendment, with judges applying the Supreme Court's Bruen standard requiring consistency with historical firearm regulation.