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Mfg Item #: 30BC3A7
Caliber: 300 BLK - Barrel: 16 medium weight taper profile - Muzzle: CMMG SV brake threaded 5/8-24 - Hand Guard: CMMG RKM14 KeyMod hand guard - Receiver: Forged 7075-T6 AL M4 type - The Mk4 RCE is one of CMMG's premiere uppers. The Mk4 RCE features a 16 416 stainless steel medium taper profile barrel CMMG's own SV muzzle brake and RKM14 KeyMod hand guard.
| Barrel | 16 medium weight taper profile |
|---|---|
| Caliber | 300 BLK |