• CMMG MK3 CBR .308 Keymod 16" Upper


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    The Mk3 CBR is one of CMMG’s premier uppers. The Mk3 CBR 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.


    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