Franklin Armory® G-S193

Last reviewed: 2026-04-17 by Jake Terry, FFL07/SOT3, with hands-on install experience on AR/AK/Glock platforms.

The Franklin Armory G-S193 binary trigger system integrates a patented Binary Firing System into a complete Glock 19 Gen3 slide assembly. In Position 1, the trigger functions as a standard semi-automatic — one round per pull. In Position 2, the Binary mode fires one round on trigger pull and one round on trigger release, reducing split times between shots. Franklin Armory engineers the G-S193 to provide instant mode cancellation: switch back to semi-automatic while the trigger is depressed, and the release round is cancelled. The integrated backplate mode indicator shows your current fire-control setting without requiring visual confirmation away from the target. Franklin Armory designed this system for Glock 19 Gen3 frames — verify your frame generation before ordering.

The Mechanism

Franklin Armory’s Binary Firing System operates through a selector that alters the sear-engagement sequence. In semi-automatic mode, the trigger bar engages the firing pin safety and releases the striker on rearward pull — standard Glock function. In Binary mode, the selector allows a second sear engagement on trigger release, discharging the firearm twice per complete trigger cycle. The cancellation feature disconnects the release sear if the selector returns to Position 1 while the trigger remains depressed, preventing unintentional discharge during mode changes. Patent No. 12,209,827 and related patents protect this mechanism. The G-S193 ships as a complete slide assembly with front and rear tritium night sights, optics-ready footprint (adapter plates sold separately), and high-tactile serrations. Anti-glare top stripe serrations reduce muzzle reflection in variable light.

Specs at a Glance

The G-S193 ships as a complete slide assembly ready to install on your Glock 19 Gen3 frame. Browse our full binary trigger catalog for other platform-specific BFS systems.

Who It’s For

Designed for shooters seeking reduced split times on follow-up shots during defensive drills, competition stages, or recreational range sessions. The binary function allows two rounds per trigger cycle without requiring separate pull/reset actions — useful in scenarios where speed between aimed shots matters. Competitive shooters use the mode for rapid transitions between multiple targets. Recreational shooters run the binary mode for controlled-cadence drills. The mode indicator and cancellation feature provide operational safety: you always know which mode is active, and you can revert to semi-automatic without cycling the trigger forward. Verify that binary triggers are legal in your jurisdiction before ordering — Franklin Armory lists 14 states and DC where civilian sales are prohibited.

Care & Maintenance

Install the G-S193 slide on your Glock 19 Gen3 frame per Franklin Armory’s instructions — professional gunsmith installation or Franklin Armory Certified Armorer installation is recommended. Never alter any component of the Binary Firing System. Improper installation, tampering, or modification voids the warranty and may cause unintentional discharge. After installation, function-check the trigger in both modes with an unloaded firearm before live-fire testing. Verify that the selector moves cleanly between Position 1 and Position 2, and confirm that the mode indicator reflects the selector position. At the range, run controlled drills to familiarize yourself with the binary function — the release round occurs when you release trigger pressure, not when you pull rearward. Clean the slide and internals per standard Glock maintenance intervals. The tritium sights require no maintenance beyond periodic zero confirmation. Adapter plates for optics are sold separately — consult Franklin Armory’s compatibility chart before ordering plates for your specific red-dot model.