The TRUGLO TFX Pistol Sight features TFO technology that combines glow-in-the-dark Swiss Tritium rear sights with a fiber optic front sight for exceptional brightness under all conditions, without the need for batteries. A White Focus Lock ring on the front sight increases low-light visibility and delivers intuitive target acquisition, while CNC-machined steel construction delivers precise tolerances ensuring model-specific fit. The Fortress finish provides lasting corrosion resistance for superior durability, and the hermetically-sealed FTX capsule protects the delicate tritium and fiber optics from oils, chemicals, and cleaning solvents. Swiss Tritium rear sights Fiber optic front sight Exceptional brightness under all conditions White Focus Lock ring CNC-machined steel construction Fortress finish for lasting durability Hermetically-sealed FTX capsule