All Wilson Combat Match Grade barrels are precisely crafted of the finest American- made 416R rifle rated steel on computer controlled equipment to Wilson's exact list of technical specifications. These proven barrels feature a hand-polished bore and feed ramps and then complete a rigorous fin... Cartridge 308 Winchester Color Stainless Material 416R Stainless Steel Length 18 Inches Twist 1:10 Threads 5/8"-24 Chrome Lined No Gas Block Diameter 0.875 Inches Gas System Length Rifle Country of Origin United States of America Compatible With AR-10, LR-3080

Nearly two decades of building the finest custom tactical AR rifles have given us the insight to develop a comprehensive line of stainless steel, match grade barrels that offer superior accuracy, reliability, and longevity for your next custom AR rifle project.