Ameriglo Green Tritium 2-dot Black Outlines Rear Sight .256in H .165 Sq Notch Glock SPECIFICATIONS BRAND: AMERIGLO CA PROP 65: YES GUN SIGHT REAR CONFIG: GREEN W BLACK OUTLINE GUN SIGHT TYPE: TRITIUM NIGHT VISION GUN SIGHT WEAPON FIT: GLOCK 42 43 43X 48 DESCRIPTION Features: Fits Make: Glock Fits Model: 42, 43, 43X, 48 Fits MOS Slide: Yes Front Sight Finish: Case Hardened Rear Sight Style: 2-Dot Tritium Rear Notch Shape: Square Rear Sight Finish: Case Hardened Rear Tritium Color: Green Rear Outline Color: Black Rear Blade Height: 0.176 in. (4.47mm) Overall Rear Height: 0.256 in. (6.5mm) Rear Notch Width: 0.165 in. (4.19mm)