Montana knife laws are among the top tier of friendliest knife laws in the country.
What the Law States
45-8-331. Switchblade knives. (1) A person who carries or bears upon the individual’s person, who carries or bears within or on any motor vehicle or other means of conveyance owned or operated by the person, or who owns, possesses, uses, stores, gives away, sells, or offers for sale a switchblade knife shall be punished by a fine not exceeding $500 or by imprisonment in the county jail for a period not exceeding 6 months, or both.
(2) A bona fide collector whose collection is registered with the sheriff of the county in which the collection is located is exempted from the provisions of this section.
(3) For the purpose of this section, a switchblade knife is defined as any knife that has a blade 1 1/2 inches long or longer that opens automatically by hand pressure applied to a button, spring, or another device in the handle of the knife.
As of April 3, 2019, Montana enacted knife legislation to remove the limitation on carrying and use of an automatic knife with a blade of less than one and one half (1-1/2″) inches. Concealment is no longer an issue in Montana and you may either conceal or not.
Montana amended its knife laws, effective October 1, 2017, by removing from the definition of concealed weapon “a knife with a blade 4 inches or more in length that is wholly or partially covered by the closing or wearing apparel of the person carrying or bearing the weapon.” Now, with newly-enacted laws, only firearms are within the definition of “concealed weapon.” § 45-8-315, MCA.
What is Legal to Own
It is legal to own any knife
What is Illegal to Own
Limits on Carry
None … except …. according to § 45-8-361, MCA it is not legal to bring a knife or blade of 4 inches or longer to schools.
Definition of Deadly Weapon
Montana code § 45-2-101 defines “weapon” any instrument that is readily capable of being used to produce death or serious bodily injury, regardless of its primary function.
Definition of Concealed Carry
Concealed carry of knives is no longer a problem.
Exceptions to the Concealed Carry Law
The law in Montana exempts several classes of people from the concealed carry law, and allows concealed carry of weapons for certain government employees and members of the National Guard. The law also exempts those who are outside the boundaries of a city or town and are participating in lawful recreational activities where it is common to carry a weapon, such as hunting, fishing, trapping, framing, ranching, or hiking. A person is also exempt from the concealed carry law when he or she is carrying the weapon in his or her own home or place of business, or has a permit to carry a concealed weapon.
Conclusion on Montana Knife Laws
Montana allows residents to possess and open carry any type of knife, including a switchblade as of early 2019 after new legislation passed.
Knives or blades of 4 inches or longer should be kept away from any schools to avoid violating the law.