CMMG Mk4 AR-15 Recce Upper Receiver Group 5.56NATO 55B59C8

CMMG, Inc.
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CMMG Upper Receiver Group, Mk4 RCE, 5.56mm, SBN

The Mk4 Recce Upper Group features a 16" 4140CM medium taper profile barrel available in either 5.56x45mm or 300 BLK. The Recce is equipped with CMMGs own SV muzzle brake and RKM14 KeyMod hand guard.

Features and Specifications:
Manufacturer Number: 55B59C8
Caliber: 5.56mm
Barrel: 16 medium weight taper profile
Muzzle: CMMG SV brake, threaded 1/2-28
Hand Guard: CMMG RKM14 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type
Salt Bath Nitride (SBN) Coating