HiViz FastDot H3 Sight Set Features The HiViz FastDot H3 sight set uses a single-dot low-profile design that pairs a red fiber optic front sight with a green tritium rear sight giving shooters a fast unambiguous sight picture in any light. In daylight the fiber optic front gathers ambient light and glows brightly for quick target acquisition while in low light or darkness the tritium-illuminated rear takes over to keep the sights visible. This dual-illumination approach means the shooter never loses their sight picture transitioning between lighting conditions which matters most in a defensive scenario. The front sight mounts to a post and the rear to a dovetail keeping installation straightforward on compatible Glock pistols. Constructed from steel for durability the FastDot H3 set is built to withstand the recoil and holster wear that a defensive or duty pistol sees over years of carry. The sights are set to factory height so the pistol remains compatible with most standard holsters without requiring a different fit. HiViz backs the tritium lamps with a 12-year warranty reflecting confidence in the longevity of the glow-in-the-dark rear sight. Fitting all Glock pistols chambered in 9mm .40 S&W and .357 Sig this sight set gives shooters a proven upgrade over factory sights for both daytime and nighttime use. HiViz FastDot H3 Specifications Manufacturer: HiViz Model: FastDot H3 Type: Handgun Sight Set Material: Steel Front Sight: Red Fiber Optic Rear Sight: Green Tritium Mount Type: Front Post / Rear Dovetail Compatible Hosts: Glock 9mm .40 S&W .357 Sig Warranty: 12-Year Tritium Available At: GrabAGun