Trijicon's Bright & Tough Night Sights are heavy duty tritium enhanced three dot sights designed to significantly improve your ability to engage targets in low light without the need for batteries. The sight bodies are machined and phosphated steel to provide exceptional durability, while each tritium lamp is housed in aluminum cylinders mounted on silicone rubber cushions to withstand heavy shock and recoil. Each lamp has also been capped with sapphire jewels to evenly distribute light and protect the lamps from solvents and punctures.Green lamps are warranted for 12 years from the date of manufacture.Front Sight Blade: Width - 0.144" Blade Height - 0.365" Overall Height - 0.418"Rear Sight: Notch Width - 0.150" Blade Height - 0.361" Overall Height - 0.451"Fits the following handgun models:Glock 17 / 17L / 19 / 22 / 23 / 24 / 25 / 26 / 27 / 28 / 31 / 32 / 33 / 34 / 35 / 37 / 38 / 39 DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.