Pricing subject to change, please contact the store for current availability and price.

Franklin BFSIII 5645A

AR Binary Trigger


We can ship to your house for $10 as long as it is legal in your state.

We are not taking any reservations on these. Last time we took reservations on these over half of the people never picked up. 

Franklin Armory's revolutionary Binary Firing System (BFS) is ideal for three gun competitors, tactical shooters, and recreational enthusiasts. It features a three-position selector - Mode 1 for Safe, Mode 2 for traditional semi-automatic Mode, or Mode 3 for Binary Mode. In Binary Mode, the firearm will discharge one round with every function of the trigger, whether a pull or a release. A user can negate the round that would otherwise be fired during the release function by moving the selector back to Mode 2 and then safely releasing the trigger. Franklin Armory's BFS is easy to install with no custom fitting. The BFS Gen 3 offers a trigger pull of 4.5 lbs. ( /- 0.5 pound), the release phase now has a positive reset, and an updated design eliminates the backup disconnector. The stronger buffer spring (included) reduces the possibility of hammer follow. It works in Franklin Armory's F17 series in .17 WSM without modification. It works on .22LR and 9mm uppers without modification. The BFS works in most AR platforms and calibers including 5.56 NATO, 308 Win, 300 BLK, 9mm, Rimfire, etc.

Type: Trigger
Model: Binary Firing System
Dimensions: Gen 3
Size: AR Platform/22LR,9mm Upper/Franklin F17 Series
Material: Metal
Action: Semi-Automatic
Trigger: 4.5 lb
Safety: Three Position
Finish: Black

**Note: This cannot ship to the following states: California, Washington DC, Iowa, North Dakota, New York, New Jersey, and Washington**

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