The Binary Firing System GEN 3 (BFSIII) is a 3-position trigger. In position 3, it fires one round on pull and one round on release. This trigger is ideal for having more fun than you thought was possible with your Ruger PC Charger and Ruger PC Carbine.
TRIGGER OPERATION:
Position 1 Safe Will not fire
Position 2 Semi Fires 1 round per pull
Position 3 Binary Fires 1 round on pull and 1 round on release