The AmeriGlo Protector Sights are designed for quicker front sight acquisition and concentration on the front sight blade. The black, serrated U notch rear sight reduces glare and offers assistance in one-hand slide manipulations, while the front sight offers a green tritium illumination and a ProGlo outline in LumiGreen or orange for an enhanced aim point. Ideal for any conceal carry or personal defense weapon. Fits Glock MOS slide.