Rainier Arms Match 6.5 Creedmoor Barrel 18in 1-8 Twist 5/8x24 Silver Medium. 5 Creedmoor barrel. They start off using a high precision match blank in 1:8 twist machine it to the highest quality. You have a barrel that is the best value hands down in the industry. They are so confident in our Match barrels that we will offer a 100percent money back guarantee within 90 days of purchase. Specifications for Rainier Arms AR Match 6.5 Creedmoor Barrel: Manufacturer: Rainier Arms Color: Silver Finish: Bead Blasted Fabric/Material: Stainless Steel Caliber: 6.5mm Creedmoor Barrel Length: 18 in Barrel Profile: M4 Gas System Length: Rifle Length Gas Block Journal Size-Diameter: .750 in Threads per Inch: 5/8x24 Barrel Twist Rate: 1-8 Flutes: No Gun Make: AR Platform Gun Model: AR-10 Weight: 3 lb Package Contents: Rainier Arms Match 6.5 Creedmoor Barrel What firearm models does the manufacturer say Rainier Arms AR Match 6.5 Creedmoor Barrel is compatible with? The manufacturer suggests that Rainier Arms AR Match 6.5 Creedmoor Barrel is compatible with AR-10Rainier Arms RAB-M-65CM-18-R-NF-SAT: Match 6.5 Creedmoor Barrel 18in 1-8 Twist 5/8x24 Silver Medium