Rock River Arms 20in STD CM Barrel Black. 223 Wylde 20in STD CM Threaded Barrel then you've found yourself in the right spot.. Developed working with several of the most extremely strong and long lasting materials available these AR15 Barrels by Rock River Arms provides you with an item which will give numerous years of reliability. Rock River Arms has been developing high quality products for a very long time and the Rock River Arms .223 Wylde 20in STD CM Threaded Barrel is their very own approach to showing you just how much they care. Right here at OpticsPlanet we ensure that it is our responsibility to obtain the perfect product for your specifications and exhibiting the Rock River Arms .223 Wylde 20in STD CM Threaded Barrel is a thing that we're happy to offer. Specifications for Rock River Arms .223 Wylde 20in STD CM Threaded Barrel: Manufacturer: Rock River Arms Color: Black Fabric/Material: Chrome Moly Caliber: .223 Wylde Barrel Length: 20 in Barrel Profile: Heavy Gas System Length: Mid Length Gas Block Journal Size-Diameter: .750 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-9 Flutes: No Gun Make: Rock River Arms Gun Model: Universal Weight: 58 oz Package Contents: Rock River Arms .223 Wylde 20in STD CM Threaded Barrel What firearm models does the manufacturer say Rock River Arms .223 Wylde 20in STD CM Threaded Barrel is compatible with? The manufacturer suggests that Rock River Arms .223 Wylde 20in STD CM Threaded Barrel is compatible with UniversalRock River Arms AR0220: 20in STD CM Barrel Black