The Tiger Rock Inc. BR308-18SF-M AR-10/LR-308 barrel is engineered for precision and performance enthusiasts seeking peak accuracy. Constructed from high-grade 416R stainless steel, this 18" mid-length fluted barrel is lightweight yet robust, ensuring reliability for both competitive shooting and tactical applications. 18" Mid Length Fluted Barrel for improved handling 1:10 Twist Rate for optimal bullet stability Made from high-quality 416R Stainless Steel Mid-length gas system for reduced recoil and smoother cycling .750" Diameter for gas block compatibility 5/8"x24 thread pitch for standard muzzle device attachment Enhance your shooting experience with the precision-crafted Tiger Rock BR308-18SF-M barrel.