Meprolight fixed Tactical Wedge Tru-Dot® tritium night sight set Compatibility: All current Kimber 1911 pistols with fixed sights Important: Intended for replacement of existing fixed sights. This set is not compatible with models furnished with adjustable sights. Exorcise care when removing/installing sights to avoid damage. Use of a sight press or installation by a professional gunsmith is recommended. Tru-Dot® is a registered trademark of Meprolight, Ltd. Tru-Dot® sights have a 12-year illumination warranty to the original purchaser.