Is the AR-15 legal in Wisconsin?

Yes. Wisconsin does not have an assault weapon ban. Standard AR-15 rifles are legal to own, purchase, and build.

Does Wisconsin require a permit to buy a firearm?

No. Wisconsin does not require a state-level permit or license to purchase a firearm. Federal background-check requirements still apply at licensed dealers.

Can I conceal carry in Wisconsin?

Wisconsin concealed carry status: Shall Issue (21+). The state must issue a permit to applicants who meet the qualifying criteria.

Is open carry legal in Wisconsin?

Wisconsin open carry: Yes, no permit. Local restrictions may still apply in cities, parks, schools, or government buildings.

Are suppressors and SBRs legal in Wisconsin?

NFA item status in Wisconsin: Machine guns restricted. Some federally-regulated items may be restricted at the state level even with a federal tax stamp.

Does Wisconsin require background checks for private sales?

No. Wisconsin does not require background checks for private (non-dealer) firearm transfers, though federal law still requires checks for all licensed-dealer sales.

All States

Wisconsin Gun Laws

moderate

Firearm Regulations

Assault Weapon Ban

Mag Capacity Limit

Permit to Purchase

Firearm Registration

Concealed Carry

Shall Issue (21+)

Open Carry

Yes, no permit

Red Flag Law

Background Check (Private)

NFA Weapons

Machine guns restricted

State Preemption

Yes

Key Notes

Handgun purchases require state background check fee via DOJ (in addition to federal). Machine guns may not shoot pistol cartridges or be possessed aggressively/offensively.

•Shall Issue (21+) Concealed Carry — Wisconsin must issue a Concealed Carry Weapon license to qualified applicants 21 and older. Training is required.
•Machine guns restricted (NFA) — Machine guns may not shoot pistol cartridges and cannot be possessed 'aggressively or offensively.' SBRs, SBS, and suppressors are legal with the federal tax stamp.
•Yes, no permit (Open Carry) — Open carry of handguns and long guns is legal without any permit.
•State Background Check Fee — Handgun purchases require a state background check through the Wisconsin DOJ in addition to the federal NICS check. A fee is charged for this service.
•State Preemption: Yes — Local governments cannot enact their own firearm regulations.
•No Background Check (Private) — Private sales between individuals do not require a state background check.

Last updated January 15, 2026

How Wisconsin Law Affects Your AR-15 Build

Plain-English implications for builders, derived from the regulations above.

Standard AR-15 Configurations Allowed

Wisconsin does not restrict semi-automatic rifles by feature. Standard AR-15 configurations — including pistol grips, collapsible stocks, threaded barrels, and flash hiders — are legal for sale and ownership.

No Magazine Capacity Limit

Standard 30-round AR-15 magazines (and larger drums) are legal for sale and use in Wisconsin.

NFA Restrictions Apply

Wisconsin restricts some or all NFA items (Machine guns restricted). Suppressors, SBRs, or other regulated items may not be available even with a federal tax stamp. Verify before buying a 14.5" barrel or pinned muzzle device intended for SBR conversion.

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