AmeriGlo UC, Sight, Fits Glock 17,19,22,23,24,26,27,33,34,35,37,38,39, Green Tritium LimeGreen Lumi Outline Front, Black Serrated Round Notch Rear GL-354 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.