Fits Glock Models: 17, 17L, 19, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 37, 38, 39 and 45. Trijicon? Suppressor/Optic Height Sights are three-dot iron sights that increase night-fire shooting accuracy by as much as five times over conventional sights. Equally impressive, they do so with the same speed as instinctive shooting - and without the need for batteries. Housed in a metal body and cushioned within silicone rubber, Trijicon? Suppressor/Optic Height Sights feature a unique shock-resistant design. Each lamp is capped with a sapphire jewel to help evenly distribute the light while protecting the lamp from solvents and puncture. Contained within aluminum cylinders for additional protection, the lamps are mounted on silicone rubber cushions to withstand shock and heavy recoil. Orange lamps are warranted for 5 years from the date of manufacture. NOTE: Professional installation recommended. Dimensions for reference only Fits Make Glock ? Fits Model 17, 17L, 19, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 37, 38, 39 and 45. Front Lamp Color Green Rear Lamp Color Orange Front Paint Color Black Rear Paint Color Black Front Blade Width 0.144 in. (3.65mm) Front Blade Height 0.365 in. (9.27mm) Overall Front Blade Height 0.418 in. (10.61mm) Rear Notch Style Square-Notch Rear Notch Width 0.15 in. (3.8mm) Rear Blade Height 0.361 in. (9.16mm) Overall Rear Height 0.451 in. (11.45mm)