The XS Sights Big Dot Tritium Revolver Front Sight in White is designed for S&W J-Frame and Ruger SP101 revolvers, delivering fast target acquisition with a high-contrast glow that absorbs ambient light and shines in low light for reliable aiming when it matters most. This CNC machined steel front sight features a prominent 0.188" Big Dot alongside a 0.140" standard dot option, giving shooters a clear visual cue that enhances alignment and speed in varying conditions. The tritium powered front sight provides lasting illumination without external batteries, ensuring visibility during dawn patrols, nighttime checks, or low-light scenarios, while the durable construction stands up to rugged use. With XS Sights commitment to quality, this white-front sight blends precise manufacturing with dependable performance and comes backed by a 10 Year Warranty and a 30 Day Satisfaction Guarantee, offering confidence for personal defense, hunting, or range practice. Whether upgrading to improve quick front sight focus or maintaining consistent sight picture across light levels, this front sight pairs seamlessly with compatible handguns to support accurate, repeatable shots when timing and precision are paramount.