Franklin armory f22 22lr 16" fluted grey binary equipped 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.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.A fluted heavy 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.The Hogue OverMolded stock allows for grip and comfortKnurled Charging HandleAuto Bolt ReleaseCompatible with many aftermarket Ruger 10/22 componentsGreat for competition shooters, tactical shooters, and recreational enthusiastsBinary Trigger Equipped, Intergated Picatinny Rail, 10/22 Compatible