The Franklin Armory Binary Trigger is a unique trigger system for firearms that operates in a binary fashion. The binary trigger system allows the shooter to fire one round with each pull of the trigger and one round with each release of the trigger, hence the name "binary."
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32-20 ammo refers to a type of handgun cartridge commonly used in the late 19th and early 20th centuries. The name "32-20" refers to the caliber of the cartridge (0.32 inches in diameter) and the black powder charge used in the cartridge (20 grains). This type of ammunition is still used today by some firearms enthusiasts, although it has largely been replaced by more modern cartridges.