Montana Title 45. Crimes § 45-8-356. Where concealed weapon may be carried--exceptions

(1) in a correctional, detention, or treatment facility operated by or contracted with the department of corrections or a secure treatment facility operated by the department of public health and human services;

(2) in a detention facility or secure area of a law enforcement facility owned and operated by a city or county;

(3) at or beyond a security screening checkpoint regulated by the transportation security administration in a publicly owned, commercial airport;

(4) in a building owned and occupied by the United States;

(5) on a military reservation owned and managed by the United States;

(6) on private property where the owner of the property or the person who possesses or is in control of the property, including a tenant or lessee of the property, expressly prohibits firearms;

(7) within a courtroom or an area of a courthouse in use by court personnel pursuant to an order of a justice of the peace or judge; or

(8) in a school building as determined by a school board pursuant to 45-8-361.