Devices that convert semiautomatic firearms into weapons that fire like machine guns — including bump stocks, auto sears, and similar conversion devices — would be banned under federal law. Anyone who already owns a modified semiautomatic firearm would have 120 days to register it under the National Firearms Act, the same registry that applies to machine guns. The ban covers manufacturing, selling, importing, transferring, and possessing these devices or modified weapons, with an exception for law enforcement and military use. Violations would carry the same penalties as other federal firearms offenses.
Congressional Summary
Banning Unlawful Machinegun Parts Act or the BUMP ActThis bill generally prohibits the import, sale, manufacture, transfer, receipt, or possession ofa device that is primarily designed, or redesigned, to increase the rate of fire when attached to a semiautomatic firearm;a device, part, or combination of parts that is designed and functions to increase the rate of fire of a firearm; ora semiautomatic firearm that has been modified to materially increase the rate of fire or to approximate the action or rate of fire of a machine gun.Additionally, the bill adds to the list of firearms subject to regulation under the National Firearms Act semiautomatic firearms that have been modified to materially increase the rate of fire or approximate the action or rate of fire of a machine gun.
Details
- Congress
- 119th
- Chamber
- Senate
- Status
- summarized
- Action
- Introduced in Senate
- Action Date
- 2025-04-09
- Date Added
- 2026-03-30