Trijicon Bright & Tough Night 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, Bright & Tough Night 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. Green lamps are warranted for 12 years from the date of manufacture.SPECIFICATIONSFits:  Make GlockFits Model:  17MOS, 19MOS, 34MOS, 17, 17L, 19, 22, 23, 24, 25,  26, 27, 28, 31, 32, 33, 34, 35, 37, 38 and 39Front Lamp Color:  GreenRear Lamp Color:  GreenFront Paint Color:  WhiteRear Paint Color: WhiteFront Blade Width:  0.12 in. (3.04mm)Front Blade Height:  0.15 in. (3.50mm)Overall Front Blade Height:  0.213 in. (5.41mm)Rear Notch Style:  Square-NotchRear Notch Width:  0.122 in. (3.09mm)Rear Blade Height:  0.193 in. (4.90mm)Overall Rear Height:  0.309 in. (7.84mm)Rear Sight Style: Novak Style