Caliber .308 Manufacturer RUGER & COMPANY INC Ruger, SFAR, Small-Frame Autoloading Rifle, Semi-automatic Modern Sporting Rifle, 762NATO/308 Winchester, 16" Threaded Barrel, 1:10" RH Twist, 5/8"-24 Thread Pattern, Type II Hard-Coat Anodized Black Finish, Magpul MOE SL Stock, Magpul MOE Grip, 15" Lite Aluminum Free-Floating Handguard with M-LOK Slots, 1 Magpul PMAG Magazine, Compatible with SR25/AR-10 Pattern