CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Midnight Bronze

CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Midnight Bronze. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere. This 5.56mm BANSHEE upper group is built on our Mk4 AR15 platform. Specifications for CMMG Mk4 5.56X45mm NATO 10.5in Banshee Upper Group Receiver: Manufacturer: CMMG Caliber: 5.56x45mm NATO Barrel Profile: Medium Taper Finish: Cerakote 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 5.56X45mm NATO 10.5in Banshee Upper Group Receiver CMMG 55BFDAB-MB: Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Midnight Bronze