Tritium Rear Sight Features Tritium Rear Sight for Glock Green Tritium single dot No Outline .451 H .165 Sq Notch Tritium Rear Sight Specifications Fits Make: Glock Fits Model: All Glock (except 42 43 48 variants) Fits MOS Slide: Yes Front Sight Finish: Case Hardened Rear Sight Style: i-Dot Rear Notch Shape: Square Rear Sight Finish: Case Hardened Rear Tritium Color: Green Rear Blade Height: 0.451 in. (11.46mm) Rear Notch Width: 0.15 in. (3.81mm)