The FT Bullseye micro optic pistol sight is a revolutionary design that eliminates the need for the front sight. Meprolight's top engineers combined fiber optics and tritium technology to produce a handgun sight that works day or night and in all lighting conditions. No batteries needed. Center the dot in the circle and you are on target. Simple, fast and accurate. The innovative single rear sight is low profile and will not snag on clothing and fits all holsters. Aim For Greatness with the Meprolight FT Bullseye. Mfg: Meprolight