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    The .308 Mk3 CBR Upper Group features a 16″ nitrided 416 stainless steel medium taper profile barrel in 308 WIN.

    The Mk3 CBR is equipped with CMMG’s own SV muzzle brake and RKM15 KeyMod hand guard.

    Specifications:

    • Caliber: 308 WIN
    • Barrel: 16.1” 1:10 twist, medium tapered, 416SS, SBN
    • Muzzle: CMMG SV brake, threaded 5/8-24
    • Hand Guard: CMMG RKM15
    • Receivers: Billet 6061-T6 AL LR308 type
    • Gas Port Location: Rifle

    Upper Group consists of:

    •      Upper Receiver Assembly (Upper Receiver, Ejection Port Cover)
    •      Barrel Sub-Assembly
    •      Hand Guard and Barrel Nut
    •      Charging Handle
    •      Bolt Carrier Group

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