Franklin Armory BFSIII CZ-S1 Binary Firing System for CZ Scorpion Straight Black. In position 3 it will fire 1 round on Pull and 1 round on Release. This makes it the fastest semi-automatic trigger on the market. The BFSIIIis ideal for Tactical and Competition use. The BFSIIIprovides greatly reduced split times between rounds and the ability to place two separate shots into a tighter group. Specifications for Franklin Armory BFSIII CZ-S1 Trigger Binary Firing System for CZ Scorpion Straight: Manufacturer: Franklin Armory Color: Black Trigger Shape: Straight Hand: Ambidextrous Gun Make: CZ Gun Model: CZ Scorpion EVO 3 Gun Type: Rifle Additional Features: 3-Position Condition: New Features of Franklin Armory BFSIII CZ-S1 Trigger Binary Firing System for CZ Scorpion Straight 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. AmbidextrousSafety Selector. Package Contents: Franklin Armory BFSIII CZ-S1 Trigger Binary Firing System for CZ Scorpion Straight What firearm models does the manufacturer say Franklin Armory BFSIII CZ-S1 Trigger Binary Firing System for CZ Scorpion Straight is compatible with? The manufacturer suggests that Franklin Armory BFSIII CZ-S1 Trigger Binary Firing System for CZ Scorpion Straight is compatible with CZ Scorpion EVO 3Franklin Armory 06-50026-BLK: BFSIII CZ-S1 Binary Firing System for CZ Scorpion Straight Black