Dan and I visited Franklin Armory at SHOT Show’s Range Day and put a few mags through the new G-S173 Binary Firing System installed in a few Gen3 GLOCK 17s.
A selector switch on the side of the slide toggles the pistol between normal firing mode and binary firing mode, in which it fires both upon trigger pull and trigger release.
We fired a GLOCK as pictured as well as an SBR’d GLOCK with a shoulder stock.
And…It worked! Not gonna lie, I was nervous about how this would feel in a handgun and how it would function, and where the gun would be in its recoil cycle upon trigger release and firing of that second shot, etc.
Franklin has designed the G-S173 so that if you’re in binary mode and change your mind after a trigger pull (i.e., you don’t want a round to fire when you release the trigger), just flip the switch up to semi-auto and you can then release the trigger without firing another round.
Turns out the G-S173 was far more controllable and much more fun than I anticipated. That said, I’ve drilled myself into the habit of keeping the trigger pinned rearward through the recoil cycle. The G-S173 required you to fully release after each pull to fire the release round.
Dan and I were both able to run the gun, keeping it on a silhouette and firing rounds more rapidly than we would have been able to from a standard GLOCK 17 Gen3. There were smiles.
The only caveat, other than making sure to take extra safety precautions and using these triggers with a full knowledge of how they function, is that the trigger must cycle fully forwards for the fire-on-release shot to work. No riding the trigger to try for that really short reset distance. All the way rearward, all the way forward.
With that done, it was a barrel of fun.