AmeriGlo UC, Sight, Fits Glock 42 and 43, Green Tritium Lime Green Lumi Outline, Front Black Serrated, Round Notch Rear GL-352 This set was designed for rapid target acquisition" and is composed of a large" highly visible front sight and a black serrated U-notch rear. The simplicity of this combination minimizes distraction and greatly reduces the time between threat identification and threat neutralization" and is the ideal choice for any EDC weapon.