Are Binary Triggers Legal in Montana?

Montana sections 45-8-303 and 45-8-304 address possession or use of a machine gun in connection with a crime or for an offensive purpose. The current ATF compendium lists no binary-trigger or multiburst-trigger category, making those purpose-based machine-gun provisions the relevant Montana context.

Binary triggers are legal under federal law and are not machine guns under 26 U.S.C. § 5845(b); ATF treats the trigger pull and the trigger release as two separate functions of the trigger, so one round is fired per function. Cargill v. Garland (2024) concerned bump stocks, not binary triggers, and does not change this.

Scope: Binary triggers (Franklin Armory BFSIII and similar): fire one round on trigger pull and one on release. Forced reset triggers are a separate class.