H.R. 631, titled the "Protecting Americans' Right To Silence Act of 2025" or "PARTS Act," would amend federal law to change how firearm silencers and mufflers are legally defined under federal firearms regulations. The bill modifies the official definitions in the U.S. Criminal Code to specify that a silencer or muffler includes both complete devices designed to reduce gunshot noise and individual components (like outer tubes) that serve as the primary housing for sound-reduction parts, provided they attach to a firearm. This change would affect gun manufacturers, sellers, and owners who use or distribute these sound-suppression devices, as well as federal law enforcement and regulators responsible for enforcing firearms regulations. The bill contains no specified funding requirements or implementation timelines. As introduced in January 2025, the bill was referred to the House Judiciary Committee for consideration.
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