S. 1374 · Where this bill is now
In committee
Introduced in the Senate, Apr 9, 2025
What this bill does
In plain words · AI-written from the official summaryBans devices that speed up semiautomatic firearms
This bill prohibits importing, selling, making, transferring, or owning devices designed to make semiautomatic firearms fire faster. It also covers devices or modified firearms that increase the firing rate or make a regular gun work like a machine gun. The bill would add these modified firearms to the list of heavily regulated weapons under federal firearms law.
How it affects you
If you own a semiautomatic firearm, you would not be allowed to modify it or attach devices to increase how fast it fires. Manufacturers and sellers of these devices or modified guns would be prohibited from making and distributing them. Most everyday gun owners would not be directly affected unless they own or want to use such devices or modifications.
Read the official summary (Introduced in Senate, Apr 9, 2025)
Banning Unlawful Machinegun Parts Act or the BUMP Act
This bill generally prohibits the import, sale, manufacture, transfer, receipt, or possession of
• a 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; or
• a 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.
Written by AI (Claude) using only the official summary by the Congressional Research Service, the Library of Congress’s nonpartisan research staff. It can miss nuance, so check the official summary and the bill text for details.
1st SessionS. 1374
A BILL
BUMP Act
Sponsor: Sen. Martin Heinrich (D-NM) · Introduced Apr 9, 2025 · Crime and Law Enforcement · 1 version of the text
Sources: Congress.gov actions and votes · bill text from GovInfo · latest official action Apr 9, 2025: “Read twice and referred to the Committee on the Judiciary.”