Two sights on a compact, light weight, aluminum mounting bracket. The original rear sight is paired with a small diameter TruGlo Eye Site Extreme. The front sight is equipped with 3 extra long fiber optic sight pins, glow in the dark shooters ring, bonus LED light, and is calibrated for easy field adjustments. When taking aim, the rear sight ring will fit perfectly inside of the glow in the dark shooters ring. This affords a secondary point of alignment while framing your target in low light. The smaller inside diameter of the rear sight ring narrows your attention to a smaller portion of your intended target. Aim small, miss small.