Rock River Arms Completed Upper Receiver ATH V2 .223/5.56mm 18 Inch Barrel 1-8 Twist 1/2-28 Thread Free-Float Handguard RRA Operator Muzzle Break. 223 Wylde Completed Upper then you've turned up at the absolute appropriate place.. Established using several of the very most robust and long lasting substances in existence these AR15 Upper Receivers via Rock River Arms will provide you with something that gives you years of reliability. Rock River Arms has been developing top quality products for a very long time and the Rock River Arms ATH V2 .223 Wylde Completed Upper is their approach to revealing how much they are concerned. Here at OpticsPlanet we make it our responsibility to receive the most suitable product for your requirements and exhibiting the Rock River Arms ATH V2 .223 Wylde Completed Upper is a thing that we're pleased to offer. Specifications for Rock River Arms ATH V2 .223 Wylde Completed Upper: Manufacturer: Rock River Arms Caliber: .223 Wylde Overall Length: 26 in Barrel Length: 18 in Barrel Profile: Heavy Gas System Length: Mid Length Barrel Twist Rate: 1-8 Threads per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: RRA Operator Brake Finish: Anadized Color: Black Gas Block Journal Size-Diameter: .750 in Handguard Length: 13 in Gun Rail: Full Top Rail Weight: 5.27 lb Barrel Material: 416R Stainless Steel Bolt Carrier Group Included: COM-SPEC Magazine Included: No Mount Type: M-LOK Package Contents: Rock River Arms ATH V2 .223 Wylde Completed Upper Bolt Carrier Group Charging Handle Assembly Rock River Arms AR0598.V1: Completed Upper Receiver ATH V2 .223/5.56mm 18 Inch Barrel 1-8 Twist 1/2-28 Thread Free-Float Handguard RRA Operator Muzzle Break Black