“CMMG 55AC20AAB Banshee MK4 5.56x45mm 30+1 12.50″ Black Nitride Medium Taper Threaded Barrel, EML 11″ M-LOK Handguards, Black Armor Cerakote Aluminum Picatinny Rail Receiver, CMMG Zeroed Grips” has been added to your cart. View cart