Senate Bill 332
Prohibition against undetectable firearms, possessing a frame or receiver of a firearm without a serial number, and providing a penalty
Topics: Crime and criminals, Firearms and dangerous weapons, Industrial development, Legislature: Criminal Penalties, Joint Review Committee on
Stopped in committee
It never got a , so it never came up for a vote. The last day for votes this session was Mar 19, 2026. To try again, a lawmaker would have to start a new bill.
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Introduced, passed
Jun 19, 2025
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Committee, stopped here
Stopped here. No public hearing was held.
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Senate vote, not reached
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Assembly vote, not reached
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Governor, not reached
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Law, not reached
Latest entry in the official record, Mar 23, 2026: “Failed to pass pursuant to ”
It never got a hearing in the Senate Committee on Licensing, Regulatory Reform, State and Federal Affairs. The committee's chair at the time was Chris Kapenga. Chairs decide which bills get a hearing. See every bill that never got a hearing this session.
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The same bill was also filed in the Assembly as AB 321. That version died when the session ended.
Terms on this page
Committee
A small group of lawmakers that looks at a bill first. Most bills never leave committee.
Public hearing
A meeting where anyone can speak to a committee about a bill, or send written comments.
Senate Joint Resolution 1
The session's calendar. Any bill not passed by its last voting day dies.
Official term: Failed to pass pursuant to SJR 1. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
What it would have done
Summary by the , the Legislature's nonpartisan drafting office. It's their wording, not ours.
This bill prohibits the manufacture, transportation, sale, possession, and carrying of firearms that cannot be detected by metal detectors or airport x-ray machines or scanners. Federal law currently has a comparable prohibition; under this bill, the person would violate state law as well. A person who violates the state prohibition is guilty of a Class G felony.
This bill also prohibits the sale, posting, provision, or possession of plans for manufacturing an undetectable firearm. A person who violates this prohibition is guilty of a Class H felony.
Read the full summary Show less
Finally, the bill prohibits the possession of a frame or a receiver of a firearm that is not marked with a serial number. A person who violates this prohibition is guilty of a Class I felony.
Because this bill creates a new crime or revises a penalty for an existing crime, the Joint Review Committee on Criminal Penalties may be requested to prepare a report.
Who's behind it
12 senators are its . All 12 are Democrats.
37 more lawmakers .
See all 49 names Hide the names
Authors (12)
- Tim Carpenter · Democrat, Senate
- Kristin Dassler-Alfheim · Democrat, Senate
- Dora Drake · Democrat, Senate
- Jodi Habush Sinykin · Democrat, Senate
- Dianne Hesselbein · Democrat, Senate
- Sarah Keyeski · Democrat, Senate
- LaTonya Johnson · Democrat, Senate
- Chris Larson · Democrat, Senate
- Melissa Ratcliff · Democrat, Senate
- Kelda Roys · Democrat, Senate
- Jeff Smith · Democrat, Senate
- Mark Spreitzer · Democrat, Senate
Signed on in support (37)
- Deb Andraca · Democrat, Assembly
- Margaret Arney · Democrat, Assembly
- Mike Bare · Democrat, Assembly
- Jill Billings · Democrat, Assembly
- Brienne Brown · Democrat, Assembly
- Ryan Clancy · Democrat, Assembly
- Angelina Cruz · Democrat, Assembly
- Ben DeSmidt · Democrat, Assembly
- Jodi Emerson · Democrat, Assembly
- Joan Fitzgerald · Democrat, Assembly
- Russell Goodwin · Democrat, Assembly
- Kalan Haywood · Democrat, Assembly
- Francesca Hong · Democrat, Assembly
- Andrew Hysell · Democrat, Assembly
- Jenna Jacobson · Democrat, Assembly
- Alex Joers · Democrat, Assembly
- Tara Johnson · Democrat, Assembly
- Karen Kirsch · Democrat, Assembly
- Renuka Mayadev · Democrat, Assembly
- Maureen McCarville · Democrat, Assembly
- Vinnie Miresse · Democrat, Assembly
- Supreme Moore Omokunde · Democrat, Assembly
- Greta Neubauer · Democrat, Assembly
- Lori Palmeri · Democrat, Assembly
- Priscilla Prado · Democrat, Assembly
- Amaad Rivera-Wagner · Democrat, Assembly
- Ann Roe · Democrat, Assembly
- Joe Sheehan · Democrat, Assembly
- Christine Sinicki · Democrat, Assembly
- Lee Snodgrass · Democrat, Assembly
- Angela Stroud · Democrat, Assembly
- Shelia Stubbs · Democrat, Assembly
- Lisa Subeck · Democrat, Assembly
- Sequanna Taylor · Democrat, Assembly
- Angelito Tenorio · Democrat, Assembly
- Randy Udell · Democrat, Assembly
- Robyn Vining · Democrat, Assembly
What happened
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Mar 23, 2026
The session ended, and the bill died with it.
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Sep 10, 2025 to Jan 9, 2026
3 more representatives signed on in support.
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Jun 19, 2025
Sent to the Senate Committee on Licensing, Regulatory Reform, State and Federal Affairs.
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Jun 19, 2025
Introduced in the Senate.
See the official record, word for word Hide the official record
- Jun 19, 2025 · Senate
Introduced by Senators Hesselbein, L. Johnson, Larson, Roys, Dassler-Alfheim, Drake, Habush Sinykin, Keyeski, Ratcliff, Smith, Spreitzer and Carpenter; cosponsored by Representatives Joers, Fitzgerald, Subeck, Hong, Andraca, Stubbs, Vining, Clancy, Arney, Bare, Brown, Cruz, DeSmidt, Emerson, Goodwin, Hysell, Haywood, Johnson, Kirsch, Mayadev, Miresse, Moore Omokunde, Neubauer, Palmeri, Prado, Rivera-Wagner, Roe, Sheehan, Sinicki, Snodgrass, Stroud, Taylor, Tenorio and Udell
- Jun 19, 2025 · Senate
Read first time and referred to Committee on Licensing, Regulatory Reform, State and Federal Affairs
- Sep 10, 2025 · Senate
Representative Billings added as a cosponsor
- Sep 23, 2025 · Senate
Representative McCarville added as a cosponsor
- Jan 9, 2026 · Senate
Representative J. Jacobson added as a cosponsor
- Mar 23, 2026 · Senate
Failed to pass pursuant to Senate Joint Resolution 1
Terms on this page
Committee
A small group of lawmakers that looks at a bill first. Most bills never leave committee.
Public hearing
A meeting where anyone can speak to a committee about a bill, or send written comments.
Senate Joint Resolution 1
The session's calendar. Any bill not passed by its last voting day dies.
Official term: Failed to pass pursuant to SJR 1. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
From the Wisconsin Legislature's official record, checked Sep 15, 2026. See the source
Committee
A small group of lawmakers that looks at a bill first. Most bills never leave committee.
Public hearing
A meeting where anyone can speak to a committee about a bill, or send written comments.
Senate Joint Resolution 1
The session's calendar. Any bill not passed by its last voting day dies.
Official term: Failed to pass pursuant to SJR 1
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor