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. Features : "Green tritium" .140" wide with LumiGreen front" Black serrated ".165" wide U-notch rear" GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.