
G-S173 Binary Trigger + Slide
- Glock 17 Gen 3 only
- Selectable semi-auto and Binary firing modes
State Legality MatrixBinary TriggersNevada
Statute-cited, not legal advice, last verified 2026-10-20
Legal
Yes. Nevada's rate-of-fire ban does not reach binary triggers, which still require a separate trigger movement per shot.
Contested entry
NRS 202.274 (added in 2019) bans devices and parts that eliminate the need for the operator to make a separate movement for each individual function of the trigger and either materially increase the rate of fire or approximate a machine gun. A binary trigger requires the operator to release the trigger for the second shot, so it is not covered.
The statute in practice
Nevada Revised Statutes section 202.274 bars devices and parts that eliminate the need for the operator to make a separate movement for each individual function of the trigger and either materially increase the rate of fire or approximate the action or rate of fire of a machine gun; a violation is a category D felony. A binary trigger still requires a release movement for its second shot, so that movement language, not the device's cyclic speed, is the central textual question.
Timeline
Federal law
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.
Common questions
Yes. Nevada's rate-of-fire ban does not reach binary triggers, which still require a separate trigger movement per shot.
What to buy
In a green state, these are the binaries that matter. Franklin Armory's BFSIII line covers AR, Scorpion, Stribog, and B&T hosts, and the Fostech Echo AR-II is the drop-in AR alternative.




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