2025 to 2026 Legislature · State Assembly bill

AB 321

Relating to: prohibition against undetectable firearms, possessing a frame or receiver of a firearm without a serial number, and providing a penalty.

In committee Last action March 23, 2026: Failed to pass pursuant to Senate Joint Resolution 1

Official bill page and text: docs.legis.wisconsin.gov

Sponsors 34

Prime sponsors

Andraca, Arney, Bare, Brown, Clancy, Cruz, DeSmidt, Emerson, Fitzgerald, Goodwin, Haywood, Hong, Hysell, Joers, Johnson, Kirsch, Mayadev, Miresse, Moore Omokunde, Neubauer, Palmeri, Prado, Rivera-Wagner, Roe, Sheehan, Sinicki, Snodgrass, Stroud, Stubbs, Subeck, Taylor, Tenorio, Udell, Vining

Status

In committee as of March 23, 2026. The 2025 to 2026 Legislature serves until the 2027 Legislature convenes on January 4, 2027.

Referred to: Assembly Criminal Justice and Public Safety (from the official referral record)

Roll-call votes 0

No roll-call votes recorded for this measure.

Timeline 6

Date	Chamber	Action
March 23, 2026	Assembly	Failed to pass pursuant to Senate Joint Resolution 1
January 8, 2026	Assembly	Representative J. Jacobson added as a coauthor
September 23, 2025	Assembly	Representative McCarville added as a coauthor
September 10, 2025	Assembly	Representative Billings added as a coauthor
July 8, 2025	Assembly	Read first time and referred to Committee on Criminal Justice and Public Safety
July 8, 2025	Assembly	Introduced 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; cosponsored by Senators Hesselbein, L. Johnson, Larson, Roys, Dassler-Alfheim, Drake, Habush Sinykin, Keyeski, Ratcliff, Smith, Spreitzer and Carpenter

Data: Open States (bulk data, October 1, 2026 monthly extract, which has no roll-call tallies; public data, attribution appreciated). Official record: docs.legis.wisconsin.gov. Bill pages link to the official text, not copied.