CMMG MK4, Semi-automatic, Stripped Lower Receiver, 223 Remington/556NATO, Cerakote Finish, Armor Black 55CA102-AB Available to order on-line. Ships in 5-14 days $139.84
CMMG MK4 MT 4140CM Barrel 5.56x45mm NATO 16.1 Inch Medium Taper Profile Threaded Barrel 1/2-28 Thread Salt Bath Nitride Finish Available to order on-line. Ships in 5-14 days $179.49
CMMG MK4, Upper Receiver, 223 Remington/556NATO, Billet 7075-T6 Aluminum, Cerakote Finish, Armor Black 55BA206-AB Available to order on-line. Ships in 5-14 days $135.42