The Ruger SFAR (Small-Frame Autoloading Rifle) is a .308 Winchester rifle built on a frame closer in size to an AR-15 than a traditional AR-10. It weighs 6.8 pounds. The SFAR has a cold-hammer-forged barrel, Ruger's two-port Boomer muzzle brake, a free-floating M-LOK handguard, the Elite 452 AR-Trigger, ambidextrous controls, a Magpul MOE SL stock, and a mid-length gas system.