Are Binary Triggers Legal in Wisconsin?

Wisconsin Statutes section 941.26 addresses machine guns and other weapons, and section 66.0409 limits local firearms regulation. The ATF compendium lists no binary-trigger or multiburst-trigger category, so the mechanical trigger-function analysis remains distinct from a generic claim of increased speed.

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 2026-07-31. 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.