Built on decades of military innovation and service, Meprolight's high-grade tritium has established the standard for tritium illumination. The Mepro Tru-Dot fixed sights are regarded as the benchmark against which all tritium pistol sights are measured. Utilizing a specially formulated manufacturing process, Meprolight delivers industry-leading brightness that performs exceptionally from broad daylight to complete darkness and every condition in between. These tritium day/night sights have earned the trust of users for decades, making them the top choice among OEM manufacturers. The Mepro Tru-Dot sights feature three extremely bright white dots for rapid target acquisition in daylight, while both the front and rear tritium sources glow green in low-light and no-light scenarios, providing confidence for accurate shots when it counts. Select models may also feature yellow or orange front tritium in place of green. Equipped with premium Swiss-made tritium vials, the Mepro Tru-Dot sights ensure visibility in low-light conditions. The square notch on the rear sight naturally guides your eyes to the top of the front sight, enhancing accuracy. Engineered as direct upgrades to your factory sights, these sights fit all holsters seamlessly. The Mepro Tru-Dot family is designed to withstand the rigors of use; they are drop-proof, shockproof and built for enduring performance. Their ultralight steel construction features a snag-free design, allowing for quick and effortless weapon draws, instilling confidence in any environment. Best of all, Mepro Tru-Dot sights require no batteries they are always on and ready for action, 24/7, 365 days a year. With tritium illumination guaranteed for 12 years, these sights are maintenance-free and can be easily installed with no modifications needed for your factory slide.