Franklin armory f22 22lr 8" sb chassis brace binary Other Features: Extended mag release, built in pic reciever rail for optics, fluted heavy barrel, threaded 1/2-28 thread pitch, enhanced firing pin, auto bolt release compatible with aftermarket ruger 10/22 components, binary equipped, sb tactical chassis, sb tactcial 1913 brace, knurled charging handle.FEATURES:Extended magazine release for faster and easier magazine changes.The built-in picatinny receiver rail makes the F22 ready for your optic of choice.The 8" barrel is threaded in the popular 1/2-28 thread pitch, ready to work with your preferred muzzle device or suppressor.An enhanced firing pin provides more reliable detonation of the primer.SB Tactical ChassisSB Tactical 1913 BraceKnurled Charging HandleAuto Bolt ReleaseGreat for competition shooters, tactical shooters, and recreational enthusiastsCompatible with many aftermarket Ruger 10/22 componentsBinary Trigger Equipped, Intergated Picatinny Rail, SB Tactical 1913 Brace