Ruger SFAR, Small-Frame Autoloading Rifle, Semi-automatic Modern Sporting Rifle, 762NATO/308 Winchester, 16.10 Barrel, 1:10 RH Twist, Type II Hard-Coat Anodized Black Finish, Magpul MOE SL Stock, Magpul MOE Grip, 15 Lite Aluminum Free-Floating Handguard with M-LOK Slots, 10 Rounds, 1 Magpul PMAG Magazine, Compatible with SR25/AR-10 Pattern 05614 The Small-Frame Autoloading Rifle, or SFAR is chambered in 7.62 NATO / .308 Win. It combines the ballistic advantages of .308 Winchester with the size of a traditional MSR. By utilizing superior materials and engineering, the SFAR is bigger and stronger where it needs to be and remains smaller and lighter than comparable .308-sized rifles.