The TruGlo TGTG231A1W Tritium Pro Black sights deliver unmatched low-light visibility for handguns by combining Swiss tritium illumination with PRO-level features that sharpen your accuracy when it matters most. Built with a frame in Black Nitride Fortress Finish and CNC machined steel construction, this pair features a front sight with a Focus-Lock ring for faster, steadier sight alignment and a quick, accurate U-notch rear design engineered for rapid target acquisition. The angled rear edge enables emergency one-hand operation, while the green Tritium front and green Tritium rear with a white-outline emphasis offer bright, long-lasting glow without batteries or light exposure. Assembled in the USA using high-quality Swiss tritium, these sights maximize brightness and durability for dependable performance in dim conditions or complete darkness. Designed to fit Kahr K-Series pistols and built to resist snag in holsters, the TruGlo Tritium Pro sights provide a cohesive, natural sight picture that improves both instinctive shooting and precise shot placement across a variety of self-defense and hunting scenarios.