The all steel SKS shell deflector is easy to install and brass shell deflector fits SKS and AK rifles. The shell deflector fits over the rear sight of your sks rifle and protects your scope from being struck by extracted brass shell casings. You can still mount a full size rifle scope or compact scope on your rifle and not have to worry about ejecting shells dinging up your scope or knocking it off zero. This Shell Deflector Will fit any SKS rifle or carbine, Will fit any AK-47 type rifle or carbine, Will also fit other rifles with similar type Military rear sight. Easy installation requires no gunsmiting or alteration to your rifle. This is a must have item for anyone that plans to use a scope on their rifle. Limited lifetime warranty.