CMMG is a leading manufacturer of firearm related accessories. CMMG's commitment to quality and creating product at the best value; this complete upper receiver is designed to connect seamlessly with the lower.

Features and Specifications:
Manufacturer Number: 90B1A6D
Caliber: 9mm
Barrel: 16.1", 1:10 twist, M4 profile, 4140CM, SBN
Muzzle: A2 comp., threaded 1/2-36
Hand Guard: CMMG RKM11 KeyMod handguard
Receiver: Forged 7075-T6 AL M4 type upper