Geissele Automatics 05166 SD 3 Gun Flat Trigger with 4.50-5.50 lbs Draw Weight & Black Oxide Finish for AR-15/AR-10 Laser Sights most effective way to mount

most effective way to mount any FastFire sight on an AR flattop

It is a CO2 (housed in the grip) powered semi-automatic with a 21 round drop free magizine

and a built-in Infrared (IR) illuminator

Made from aircraft aluminum alloy with heavy duty steel locking plate for maximum strength holding

Geissele Automatics 05166 SD 3 Gun Flat Trigger with 4.50-5.50 lbs Draw Weight & Black Oxide Finish for AR-15/AR-10 Laser Sights most effective way to mountThe S3G (Super Dynamic) was developed to combine the SSF combat trigger's match grade semi automatic performance with its smooth single stage full automatic feel to make a fast, smooth, and robust trigger ideal for 3 Gun competition shooting.