AMERIGLO Optic Compatible sets provide a precise, elevated co-witness sight picture for slide-mounted red dot optics and serve as reliable back-up sights. Items also available individually. Fits: All Glock Models Features: Fits Make: Glock Gen: Gen 1-5 Fits Model: All Glock Models Size: 3XL Fits MOS Slide: Yes Front Sight Style: Tritium Front Sight Finish: Case Hardened Front Tritium Color: Green Front Outline Color: Black Front Blade Width: 0.125 in. (3.18mm) Front Blade Height: 0.365 in. (9.27mm) Rear Sight Style: i-Dot Tritium Rear Notch Shape: Square Rear Sight Finish: Case Hardened Rear Tritium Color: Green Rear Outline Color: None Rear Blade Height: 0.371 in. (9.42mm) Overall Rear Height: 0.451 in. (11.46mm) Rear Notch Width: 0.15 in. (3.81mm)