Franklin Armory G-S173 Binary Firing System Features The Franklin Armory G-S173 Binary Firing System lets shooters switch between semiautomatic and Binary modes where Binary fires one round on the trigger pull and a second on release shrinking split times and tightening shot groups for competitive and defensive shooting alike. Like all Franklin Armory BFS triggers a Binary release round can be cancelled by simply switching back to semiautomatic while the trigger is still depressed keeping the system safe and controllable. The integrated back plate mode indicator shows the active fire mode at a glance so the shooter never has to break their sight picture to check it. Front and rear tritium night sights add low-light capability to the package. High-tactile front and rear slide serrations improve manipulation during racking and press checks while anti-glare top stripe serrations cut distracting reflections off the slide top. The slide ships optics ready with adapter plates sold separately to mount a red dot of the shooter s choice. Built to install on most Glock 17 Gen3 firearms the G-S173 is suited for defense sport and recreational use alike. This complete slide assembly turns a duty Glock into a dual-mode competition and carry pistol. Franklin Armory G-S173 Binary Firing System Specifications Manufacturer: Franklin Armory Model: G-S173 Binary Firing System Compatible Hosts: Glock 17 Gen3 Color: Black Finish: Applied Finish Overall Length: 9 Slide Description: Optic Ready Weight: 1.4 lbs Available At: GrabAGun