To consider a gun to be great, it must be reliable day and night.Providing a consistent green glow, our tritium night sights ensure accuracy in low light and even complete darkness.In daylight, a large white dot and rounded notch design increase speed and accuracy.It is cnc-machined stainless steel construction, quick and accurate u-notch snag resistant design, fits most standard holsters.Rear Color: GreenType: Front/Rear SetFrame Material: Stainless SteelFrame Color: BlackFirearm Fit: Glock 17Style: Square Front/U-Notch RearFront Material: TritiumRear Material: TritiumFront Color: Green