Is Brass Knuckles Legal in Missouri? (2026)
Partially — Brass Knuckles are legal with restrictions in Missouri as of 2026.
Law changed in 2022: In 2022, Missouri passed legislation that repealed the ban on brass knuckles, making them legal to possess and sell.
Quick Answer
Missouri law classifies brass knuckles as a dangerous weapon under Mo. Rev. Stat. § 571.010. Possession is generally illegal unless carried openly or with a permit. Concealed carry without a permit is prohibited.
- Age restriction: Must be 18 or older to possess legally
What the Law Says
Missouri law prohibits the unlawful use of a weapon, including brass knuckles.
— Missouri Revised Statutes Section 571.010
| Category | Details |
|---|---|
| Possession | Legal to possess openly; concealed possession requires a permit. |
| Sale & Purchase | Sale is legal with restrictions. |
| Penalties | Unlawful concealed carry is a misdemeanor with fines and/or imprisonment. |
| Age Restriction | Must be 18 or older to possess legally. |
| Pending Legislation | None known |
In 2022, Missouri passed legislation that repealed the ban on brass knuckles, making them legal to possess and sell.
Enforcement Reality
As of 2022, the possession and sale of brass knuckles are no longer prohibited in Missouri. However, using them in a crime will still result in severe penalties.
A common mistake is to be unaware of the recent law change. While possession is now legal, it is crucial to understand that any criminal use is still a serious offense.
Local Exceptions
None identified. State law applies uniformly across Missouri. Local ordinances may still vary — check with your city or county government for any additional rules.
Real-World Scenarios: Brass Knuckles in Missouri
Can You Fly With Brass Knuckles Out of Missouri?
Since brass knuckles is restricted in Missouri, bringing it to the airport compounds your legal exposure. You're now dealing with both state law and federal jurisdiction. Don't do it.
Can You Cross State Lines With Brass Knuckles From Missouri?
This is where people get burned. Missouri treats brass knuckles as restricted, but neighboring Illinois treats it as illegal. The law changes at the state line — not gradually, not with a warning sign, instantly. "I bought it legally" is not a defense in the new state. Interstate highways near the Missouri/Illinois border are known enforcement corridors. If you're driving with out-of-state plates in a state where brass knuckles is illegal, you're a target.
Bottom Line
Brass Knuckles are legal with restrictions in Missouri. This product is permitted, but specific conditions apply. Violating those conditions can result in fines or criminal charges. Read the rules carefully and consult an attorney if unsure.
Missouri vs. the Rest of the US
Across the US, carrying brass knuckles is fully legal in 2 states, restricted in 8, and illegal in 40. Missouri falls in the RESTRICTED category.
View the full 50-state map →Body Armor Laws Guide
This topic is closely related to body armor and self-defense laws.
Reviewed by cross-referencing the cited state statute against current legislative databases and regulatory publications.
Sources & Verification
This page was reviewed by Ethan Harper by comparing the legal status against the cited state statute. AllowedHere is an informational resource and does not provide legal advice. Consult a licensed attorney for guidance specific to your situation.
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