Undetectable Firearms Modernization Act

[Congressional Bills 119th Congress] [From the U.S. Government Publishing Office] [H.R. 4221 Introduced in House (IH)] <DOC> 119th CONGRESS 1st Session H. R. 4221 To modernize the Undetectable Firearms Act of 1988. _______________________________________________________________________ IN THE HOUSE OF REPRESENTATIVES June 27, 2025 Ms. Dean of Pennsylvania introduced the following bill; which was referred to the Committee on the Judiciary _______________________________________________________________________ A BILL To modernize the Undetectable Firearms Act of 1988. 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 ``Undetectable Firearms Modernization Act''. SEC. 2. MODERNIZATION OF THE PROHIBITION ON UNDETECTABLE FIREARMS. Section 922(p) of title 18, United States Code, is amended-- (1) in paragraph (1)-- (A) in subparagraph (A), by striking ``grips, stocks, and magazines, is not as detectable as the Security Exemplar, by walk-through metal detectors calibrated and operated to detect the Security Exemplar'' and inserting ``all parts other than major components, does not contain detectable material''; and (B) in subparagraph (B), by striking ``when subjected to inspection by the types of x-ray machines commonly used at airports, does not generate'' and inserting the following: ``if subjected to inspection by the types of detection devices commonly used at airports for security screening, would not generate''; (2) in paragraph (2)-- (A) by striking subparagraph (B) and inserting the following: ``(B) the term `major component', with respect to a firearm-- ``(i) means the slide or cylinder, or the frame or receiver of the firearm; and ``(ii) in the case of a rifle or shotgun, includes the barrel of the firearm; and''; and (B) by striking subparagraph (C) and the proviso that follows and inserting the following: ``(C) the term `detectable material' means m