To consider a gun to be great, it must be reliable day and night.Providing a consistent green glow, rival's 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.The frame has cnc-machined stainless steel construction, snag resistant design, and fits most standard holsters.Rear Color: Green with White OutlineFrame Material: Stainless SteelFrame Color: BlackFirearm Fit: Glock 17 MOSStyle: Square Front/U-Notch Rear Low SetFront Material: TritiumRear Material: TritiumFront Color: Green with White Outline