Possession or use of a machine gun must be presumed to be for an offensive or aggressive purpose when the machine gun is in the possession of or used by a person who has been convicted of a crime of violence in any court of record, state or federal, in the United States of America or its territories or insular possessions.
Presumption Of Offensive Or Aggressive Purpose
Mont. Code Ann. § 45-8-305, under Weapons.
Mont. Code Ann. § 45-8-305