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 orange 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: Green/ Tritium Black RingFrame Material: Stainless SteelFrame Color: BlackFirearm Fit: Sig P-SeriesStyle: Tritium Square Front/Tritium U-Notch RearFront Material: TritiumRear Material: TritiumFront Color: Green/Tritium Orange RingFirearm Type: Handgun