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 CMMG 55B785C Upper Group, Mk4 HT, 5.56mm, SBN
CMMG Inc logo
CMMG 55B785C Upper Group, Mk4 HT, 5.56mm, SBN
UPC: 815835015903
CMMG 55B785C Upper Group, Mk4 HT, 5.56mm, SBN
List Price: $749.95
Our Price: $696.95
      You Save: $53.00

The CMMG 55B785C Upper Group Mk4 HT, 5.56mm, SBN features CMMG’s RKM11 KeyMod free float hand guard. The CMMG 55B785C Upper Group Mk4 HT, 5.56mm, SBN has a nitrided 4140 CrMo steel barrel in a heavy taper profile in a 5.56mm format. 
Caliber: 5.56mm
Barrel: 16.1″, 1:7 twist, heavy taper, 4140CM, SBN
Muzzle: Thread protector, threaded 1/2-28
Hand Guard: CMMG RKM11 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type
Upper Group consists of:
Upper Receiver Assembly (Upper Receiver, Ejection Port Cover, Forward Assist)
Barrel Sub-Assembly
Hand Guard and Barrel Nut
Charging Handle
Bolt Carrier Group