WASHINGTON, D.C. — Mike Crapo has joined a group of lawmakers supporting federal legislation that would change how firearm suppressors are defined under U.S. law.

The proposal, known as the Protecting Americans’ Right to Silence (PARTS) Act of 2025, would amend the federal definition of firearm silencers and mufflers in U.S. Code. According to a press release from Crapo’s office, the measure is intended to clarify how suppressors and their components are regulated.

The bill was introduced in the Senate by Tim Sheehy and has multiple co-sponsors, including Crapo. Companion legislation has been introduced in the U.S. House by August Pfluger.

The legislation would amend language in 18 U.S.C. §921(a)(25) to focus the definition of a suppressor on a complete device or a primary structural component, rather than broadly applying the definition to multiple individual parts.

Supporters say the change would provide clearer regulatory guidance for manufacturers, retailers, and firearm owners. The proposal has received support from several firearms and shooting-sports organizations, including the American Suppressor Association, the National Rifle Association, and the National Shooting Sports Foundation, according to the release.

The bill has been referred to a Senate committee for consideration.