Night Fision Optics Ready Stealth Series Square-Notch Tritium Night Sight Glock 17/G19/G34 Black Front Green Tritium/Black Rear Black. Tritium-equipped configurations use self-illuminating Tritium for an always-on glow without batteries or external power. Night Fision uses 30percent more Tritium than most night sights on the market producing bright easy-to-acquire aiming points in low-light conditions. Rather than a painted-on front sight ring Night Fision uses an injection-molded daylight-fluorescing material designed to provide enhanced visibility in daylight. Night Fisions Optics Ready Stealth (ORS) sights are engineered specifically for use with pistol-mounted red dot sights. Unlike traditional suppressor-height sights repurposed for optic use ORS sights are designed from the dovetail up to provide a lower 1/3 co-witness with compatible optics. This minimizes obstruction of the optic window while maintaining a dependable backup sighting system if needed. ORS sights are available in multiple configurations including tritium front and rear sights tritium front sights with blank rear sights and fully blacked-out sights. Specifications for Night Fision Optics Ready Stealth Series Square-Notch Tritium Night Sight: Manufacturer: Night Fision Color: Black Rear Sight Color: Green Tritium Sight Style: Square-Notch Fabric/Material: Steel Gun Type: Handgun Illumination Type: Tritium Features of Night Fision Optics Ready Stealth Series Square-Notch Tritium Night Sight: Purpose-built Optics Ready Stealth (ORS) design for use with pistol-mounted red dot sights Engineered to provide a lower 1/3 co-witness with compatible optic and firearm combinations Low-profile design minimizes obstruction of the optic window compared to traditional suppressor-height sights Tritium-equipped sights use self-illuminating Tritium requiring no batteries or external power Night Fision tritium sights feature 30percent more Tritium than most night sights on the market Tritium front sights available with yellow orange or black front sight rings Injection-molded daylight-fluorescing front sight ring provides enhanced daytime visibility on yellow and orange configurations Rugged machined steel sight bodies Serrated sight faces help reduce glare Matte black Nitride finish provides excellent wear and corrosion resistance Package Contents: Night Fision Optics Ready Stealth Series Square-Notch Tritium Night Sight Night Fision GLK-001-358-381-ZGZG: Optics Ready Stealth Series Square-Notch Tritium Night Sight Glock 17/G19/G34 Black Front Green Tritium/Black Rear Black