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S 1039
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PARTS Act of 2025

To amend the definitions of firearm silencer and firearm muffler in section 921 of title 18, United States Code, and for other purposes.

Introduced Mar 13, 2025

Latest action (Mar 13, 2025) Read twice and referred to the Committee on the Judiciary.

Referred to
Judiciary Committee
Policy area
Crime and Law Enforcement
Issues
Gun Policy
Legislative subjects (1)
Firearms and explosives

Summary
  • Amends the definition of firearm silencer and firearm muffler in federal law (18 U.S.C. section 921).
  • Defines a firearm silencer or muffler as a device designed and intended to silence, muffle, or diminish the sound of a portable firearm and to attach to the firearm directly or through a mount or adaptor.
  • Includes in the definition the outer tube or primary housing structure of any device that contains internal sound-reduction components and attaches to a portable firearm.
  • Requires both the design intent to reduce firearm sound and attachment capability to a portable firearm as elements of the definition.

AI-generated plain-language summary of the bill text — neutral, and may be imperfect. See the full text below for the exact wording.

Sponsor (1)
11 cosponsors

Actions (2)
  1. Mar 13, 2025 Read twice and referred to the Committee on the Judiciary. · senate
  2. Mar 13, 2025 Introduced in Senate

More bills on these subjects (8)

Other bills that carry the most legislative subjects in common with this one (topical discovery — distinct from the procedural related bills above).

  • SRES 838 — A resolution commemorating the first anniversary of the mass shooting at Fort Stewart, Georgia, on August 6, 2025. (shares 1 subject)
  • HR 9770 — Continuing Appropriations Act, 2027 (shares 1 subject)
  • SRES 799 — A resolution expressing the condolences of the Senate and honoring the memory of the victims on the fourth anniversary of the mass shooting at the Fourth of July parade in Highland Park, Illinois, on July 4, 2022. (shares 1 subject)
  • HR 1181 — Protecting Privacy in Purchases Act (shares 1 subject)
  • HR 9495 — Department of Defense Appropriations Act, 2027 (shares 1 subject)
  • HR 1041 — Veterans 2nd Amendment Protection Act (shares 1 subject)
  • HR 2267 — NICS Data Reporting Act of 2026 (shares 1 subject)
  • S 1572 — Federal Carjacking Enforcement Act (shares 1 subject)

Text versions (1)
  • Introduced in Senate · Mar 13, 2025

Only one text version is on file, so there’s no earlier version to compare against yet.

Full text

IN THE SENATE OF THE UNITED STATES

March 13, 2025

Mr. Sheehy (for himself, Mr. Lee, Mr. Cassidy, Mr. Ricketts, Mr. Budd, Mr. Daines, Mr. Justice, and Mr. Cornyn) introduced the following bill; which was read twice and referred to the Committee on the Judiciary

A BILL

To amend the definitions of firearm silencer and firearm muffler in section 921 of title 18, United States Code, and for other purposes.

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled,

SECTION 1. SHORT TITLE.

This Act may be cited as the “Protecting Americans’ Right To Silence Act of 2025” or the “PARTS Act of 2025”.

SEC. 2. FIREARM SILENCERS AND FIREARM MUFFLERS.

Section 921(a)(25) of title 18, United States Code, is amended to read as follows:

“(25) The terms ‘firearm silencer’ and ‘firearm muffler’ mean—

“(A) any device designed or redesigned, made or remade, and intended—

“(i) to silence, muffle, or diminish the auditory report of a portable firearm; and

“(ii) to be attached to a portable firearm, directly or through a mount, adaptor, or other device that is not a firearm silencer or firearm muffler; or

“(B) the outer tube or other single part of any device that—

“(i) provides the primary housing or is the primary structure for internal sound-reduction components designed or redesigned, made or remade, and intended to silence, muffle, or diminish the auditory report of a portable firearm; and

“(ii) attaches to a portable firearm, directly or through a mount, adaptor, or other device that is not a firearm silencer or firearm muffler.”. <all>

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