The tfx pro sights feature a quick and accurate u-notch design, glow-in-dark sights, a contrast colored front sight focus lock ring for even faster focus, and an angled rear sight for one-hand operation.This low mount model is compatible with glock 17,17l,19,22,23,24,26,27,33,34,35,37,38,39 excluding mos models.Rear Color: GreenType: Fiber Optic Front/RearFrame Material: SteelFrame Color: Nitride FortressFirearm Fit: Glock 34Style: Square Front/U-Notch Rear Low SetFront Material: Tritium/Fiber OpticRear Material: Tritium/Fiber OpticFront Color: Green with Orange OutlineFirearm Type: Handgun