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Undetectable Firearms Modernization Act

In committee: it can still change before the session ends.

US HR 4221 · House Bill · 119th Congress

Stage
In committee
Started in
House
Sponsor
1
Latest action
Jun 27, 2025

What it does

Undetectable Firearms Modernization Act This bill strengthens the detectability standard for firearms under federal firearms laws. Current law requires firearms to be detectable by walk-through metal detectors after the removal of grips, stocks, and magazines. Specifically, firearms must be as detectable as a security exemplar (i.e., a piece of stainless steel that is 3.7 ounces and in a shape resembling a handgun). There are exceptions, including for firearms manufactured for or sold to U.S. military or intelligence agencies. This bill requires firearms to contain detectable material after the removal of all parts other than major components. It defines detectable material as material that…

Official summary · Introduced in House · Jun 27, 2025

Titles and provisions can change as the bill moves.

Read the full textRead it on the official site

Where it stands

  1. Introduced (Done)

    Jun 27, 2025

  2. Committee (Current step)

    In committee · Jun 27, 2025

  3. Floor (Not started)

  4. Law (Not started)

What moved

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Who is involved

Sponsors

The lawmakers who put their names on it, lead sponsors first.

In the news

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Where it goes next

While a bill can still move, the questions are about people and money.

Work with this bill

Undetectable Firearms Modernization Act | 52