The AK 47 Shell Deflector Protects optics from being struck by extracted brass shell casings. The AK shell deflector mounts to the rear sight on your AK 47 or SKS rifle. 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. Shell Deflector Shield 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 Protects your valuable Rifle Scope Limited lifetime warranty. Shell Deflector Specs AK Rifle Shell/Brass Deflector Made Of Steel Limited Lifetime Warranty