CMMG AR-15 MK4 RCE Complete Upper Receiver .223 Rem/5.56 NATO 16" Barrel RKM14 KeyMod Hand Guard SV Muzzle Brake Matte Black 55B5949

CMMG, Inc.
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CMMG is a leading manufacturer of AR-15 and AR-15 related accessories. CMMG's commitment to quality and creating product at the best value at the best price is unmatched. This complete upper receiver is designed to connect seamlessly with your existing AR-15 or AR-15 pattern lower receiver. For your convenience, a bolt carrier group is included and everything on this complete unit features a matte black finish.

Specifications and Features:
CMMG Complete Upper Receiver 55B5949
5.56mm NATO (accepts .223 Remington)
16" 416 stainless steel medium taper profile
Threaded 1/2x28
RKM14 KeyMod hand guard
Forged 7075-T6 Aluminum M4 Type Upper
CMMG SV brake
Bolt carrier group
Charging Handle
Matte black


Item#: 2-CMMG55B5949