Ameriglo Green Tritium Single Dot Rear Sight .451in H .165in Sq Notch Glock SPECIFICATIONS BRAND: AMERIGLO CA PROP 65: YES GUN SIGHT REAR CONFIG: GREEN GUN SIGHT TYPE: TRITIUM NIGHT VISION GUN SIGHT WEAPON FIT: ALL GLOCKS EXCEPT 42 43 48 DESCRIPTION Features: 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: 0.371 in. (9.42mm) Overall Rear Height: 0.451 in. (11.46mm) Rear Notch Width: 0.15 in. (3.81mm)