CMMG Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver MT Carbine 1-10 Twist 5/8x24 TPI Midnight Bronze. Well youre in luck At 12.5in this Mk47 BANSHEE upper group is just the thing to scratch that 7.62x39mm itch. Built on the mid-size Mk47 platform this upper group is designed to work with Mk47 lowers and will not work with AR15(Mk4) or AR10/LR308(Mk3) lower groups. Specifications for CMMG Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver: Manufacturer: CMMG Caliber: 7.62x39mm Overall Length: 21.4 in Barrel Length: 12.5 in Barrel Profile: Medium Tapered Gas System Length: Carbine Length Barrel Twist Rate: 1-10 Threads per Inch: 5/8x24 Muzzle Device: CMMG Zeroed Linear Compensator Finish: Cerakote Fabric/Material: 7075 T6 Aluminum Gas Block Journal Size-Diameter: .750 in Gun Rail: M-LOK Gun Make: CMMG Gun Model: CMMG Banshee MK47 Weight: 4.5 lb Barrel Material: 4140 Chrome Moly Bolt Carrier Group Included: MIL-SPEC Magazine Included: No Charging Handle Included: MIL-SPEC Package Contents: CMMG Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver ZEROED AR15 Polymer Dust Cover ZEROED Mk47 Ambi Charging Handle ZEROED Linear Compensator .308 Win What firearm models does the manufacturer say CMMG Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver is compatible with? The manufacturer suggests that CMMG Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver is compatible with CMMG Banshee MK47CMMG 76B6A0A-MB: Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver MT Carbine 1-10 Twist 5/8x24 TPI Midnight Bronze