CMMG 5.7X28mm Banshee Upper Group Receiver 5in 1-9 Twist 1/2 X 28 TPI 13.8in Armor Black

CMMG 5.7X28mm Banshee Upper Group Receiver 5in 1-9 Twist 1/2 X 28 TPI 13.8in Armor Black. 7x28mm has proven itself to be well suited for the job. With incredibly flat shooting performance and low recoil 5.7x28 excels at closer ranges while still providing ideal penetration. Equipped with a 5 barrel this is the most compact 5.7x28mm upper group CMMG offers. CMMG 5.7x28mm uppers are designed to work with CMMG Mk57 lowers or standard AR15/Mk4 lowers (when used with 5.7 AR Conversion Mags). Specifications for CMMG 5.7X28mm 5in Banshee Upper Group Receiver: Manufacturer: CMMG Caliber: 5.7x28mm Overall Length: 13.8 in Barrel Length: 5 in Barrel Profile: Medium Tapered Barrel Twist Rate: 1-9 Firearms Threads Per Inch: 1/2x28 Muzzle Device: CMMG Zeroed Linear Compensator Finish: Cerakote Gun Rail: M-LOK Gun Type: Rifle Gun Make: AR Platform Gun Model: Universal Magazine Included: No Mount Type: M-LOK Package Contents: CMMG 5.7X28mm 5in Banshee Upper Group Receiver What firearm models does the manufacturer say CMMG 5.7X28mm 5in Banshee Upper Group Receiver is compatible with? The manufacturer says that CMMG 5.7X28mm 5in Banshee Upper Group Receiver is compatible with UniversalCMMG 57BBCF0-AB: 5.7X28mm Banshee Upper Group Receiver 5in 1-9 Twist 1/2 X 28 TPI 13.8in Armor Black