PARTS Act of 2025

This bill amends federal law to clarify the legal definition of "firearm silencer" and "firearm muffler" under Title 18. It defines these devices as any component designed to reduce firearm noise that attaches to a firearm, including the outer tube or primary housing of such devices. The law directly affects manufacturers, dealers, and owners of silencers by establishing a specific regulatory definition for these products. This definition change, rather than creating new restrictions, ensures consistent application of existing firearm laws to silencer components.