Using Swiss tritium, the Tritium Night Sight offers shooters reliable, maximum visibility, without a need for batteries. The U-notch design is accurate and quick to acquire, even more so because of the front sight Focus Lock ring. Tritium night sights are coated with the Fortress Finish to provide a permanent protective coating. Glows in the dark Snag resistant design fits standard holsters Unmatched visibility in virtually all shooting conditions This tritium night sight is compatible with Kimber handguns.