CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Charcoal Green

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Charcoal Green. 5 5.56mm BANSHEE upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine like ballistic performance. Specifications for CMMG Mk4 5.56X45mm NATO 12.5in Banshee Upper Group Receiver: Manufacturer: CMMG Cartridge: 5.56x45mm NATO Overall Length: 20.8 in Barrel Length: 12.5 in Barrel Profile: Medium Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Threads per Inch: 1/2x28 Muzzle Device: CMMG Zeroed Linear Compensator Fabric/Material: 6061-T6 Aluminum Gas Block Journal Size-Diameter: .750 in Gun Rail: M-LOK Gun Make: CMMG Gun Model: CMMG Mk4 Weight: 3.8 lb Magazine Included: No Mount Type: M-LOK Package Contents: CMMG Mk4 5.56X45mm NATO 12.5in Banshee Upper Group Receiver CMMG 55BDFF4-CG: Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Charcoal Green