Closing the Bump Stock Loophole Act of 2025

HR 2799, the Closing the Bump Stock Loophole Act of 2025, prohibits the sale, possession, and modification of devices that increase the firing rate of semi-automatic firearms to mimic machine guns (commonly called "bump stocks"). It specifically bans manual, power-driven, or electronic devices designed to speed up firing, as well as modified firearms that achieve this effect. Owners of pre-existing modified firearms must register them within 120 days of the law's enactment, with exemptions for government entities and firearms already lawfully modified and registered before the bill passes. The bill does not restrict standard semi-automatic firearms or require registration of unmodified guns.