Foxtrot Mike FM-9, Franklin Armory AR-S1 Binary Trigger, 5 ETS Mags

5" FM9 Monolithic style upper receiver, with A2 charging handle, MFT FM9 Lower receiver, with MFT grip and brace. Mag NOT Included. Accepts Glock Mags! 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, making this trigger ideal for both tactical and competition use. The BFSIII® provides greatly reduced split times between rounds, allowing for tighter groups. 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 FEATURES: * Release round can be canceled by simply moving our Patent Pending selector out of Binary® mode while holding the trigger back * Easy to install * Smooth trigger pull: 4.5 lbs, +/- 0.5 lbs * Positive reset on release phase * Enhanced buffer springs for optimal flexibility * Works in most AR platforms and calibers including 5.56 NATO, 308 Win, 300 BLK, 9mm, Rimfire, etc.... * Compatible with most Bolt Carrier Groups (BCG) * Great for competition shooters, tactical shooters, and recreational enthusiasts *The AR-S1 trigger comes with the straight flat-faced trigger. Warning: Not for civilian sales in CA, CT, DC, FL, HI, IA, MD, NJ, NY, RI, and WA In Delaware may only be used in pistol platforms. NEVER ALTER ANY INTERNAL COMPONENT OF THE BFS®.