Enhanced Rock River M4

Receiver RRA Upper (Integrated Rear Sight/Carry Handle) /Lower Receiver
Barrel RRA 16" R-4 Fluted Chrome Moly Barrel Assembly (5.56mm NATO Chamber, 1:9 twist) Flip Up Front Sight 
Caliber 5.56 NATO 
BCG RRA Chrome BCG
Furniture Hogue OD Green Grip, Operator A2 Stock
Handguard Olive Drab Green Forearm 
Trigger RRA Two Stage Trigger
Muzzle Device A2 Birdcage
Gas System Carbine
Misc. Features Geissele Super Charging Handle