CMMG AR-15 Resolute 100 Mk4 Upper Receiver Assembly 5.56x45mm 16" Barrel M-LOK Handguard

CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black. Chambered this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute Upper Receiver Group: Manufacturer: CMMG Muzzle Device: CMMG Zeroed Muzzle Brake Color: Armor Black Fabric/Material: Billet 6061 T6 Aluminum Gas Block Journal Size-Diameter: .750 in Gun Rail: M-LOK Gun Type: Rifle Gun Make: CMMG Gun Model: CMMG Mk4 Magazine Included: No Package Contents: CMMG Mk4 Resolute Upper Receiver Group CMMG 55BC7C3-AB: Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black