XS Sights XS Minimalist, Night Sights, Fits S&W K-Frame, Green Dot SW-M001S-4G The XS Sights Minimalist Night Sights are now available for K and L frame revolvers! These sights feature a tritium front sight with their high contrast glow dot" offering top notch visibility by glowing brightly in low light conditions. The high visibility front sight is paired with a non-tritium rear sight to upgrade your revolver sight picture. The serrated rear sight cuts down on glare and enhances the focus on the front sight. They CNC machine their sights in-house from solid steel bar stock.