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Montana knife laws

Montana knife laws
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Montana is a state with relatively lenient knife laws compared to other states in the U.S. While many types of knives are allowed for ownership and carry, there are still certain restrictions that citizens and visitors must be aware of.

Types of Knives

Legal Knives

Illegal Knives

Montana does not specifically ban the ownership of any particular type of knife.

Carrying Laws

Open Carry

There are no specific statutes against open carry for most types of knives in Montana. Generally, you can openly carry any knife that is legal to own.

Concealed Carry

Concealed carry of a knife with a blade longer than 4 inches is considered illegal unless the individual has a valid reason, such as hunting, fishing, or other recognized sporting purposes.

Restricted Locations

While there aren’t many restrictions on types of knives, there are locations where carrying a knife is prohibited, such as:

  1. Schools and school grounds
  2. Government buildings
  3. Any other places where weapons are specifically prohibited by federal or state law

Law Enforcement or Military Exceptions

Law enforcement officers, active military members, and other state and federal officers are generally exempted from many knife restrictions when the knife is carried as a part of their official duties.

Consequences of Law Violation

Violating knife laws in Montana, such as concealed carrying a knife over 4 inches without a valid reason, can result in penalties ranging from fines to imprisonment, depending on the severity of the violation and the context in which the infraction occurred.


While Montana is relatively lenient regarding knife ownership and carry, it’s essential to be aware of the restrictions, especially concerning concealed carry and specific locations. Always consult with local regulations or legal experts for the most current and specific information.


Montana’s official legislative documents and websites

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