This Trijicon Suppressor/Optic Height Night Sight Set is machined from solid steel. The set houses a trio of Tritium gas-filled lamps, each with a sapphire jewel front lens that focuses and evenly distributes the emitted light, as well as making the sights resistant to punctures and most solvents. These sapphire lens-enhanced Tritium vials are some of the brightest in the industry, and each is housed within an aluminum cylinder that is cushioned with silicone rubber for shock resistance and durability. Notes:Set Screw not included FeaturesThese sights have a precision machined metal body that holds the Tritium gas-filled lamps.These Tritium lamps glow bright; giving you a highly visible sight picture in daytime or dark conditions.Gunsmith installation is recommendedRear sight height is .440" and front height is .350" DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatib...