Target Rear Sight. Using a simple 2 screw installation process, it's a breeze to put on and doesn't require any gunsmithing. This target sight has adjustment knobs for windage and elevation to help you get that little .22 caliber bullet into the exact square centimeter you want to hit. Constructed from steel, it can also withstand quite a bit of punishment. Pick one up today and find out why Williams Gun Sight Company is a renowned manufacturer of firearm sights!