Are Binary Triggers Legal in Idaho?

Idaho Code section 18-3302J declares the legislature's intent to wholly occupy the field of firearms regulation and bars counties, cities, and other political subdivisions from regulating the sale, acquisition, transfer, ownership, possession, transportation, carrying, or storage of firearms or their components.

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.

Federal baseline verified 2026-10-20. 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.