Kensight SLAM Dot Fixed Rear Night Sight Black. The 860-668 rear sight features a recessed blade to Reduce glare a large relief cut for an excellent silhouetted sight picture and two .077" with Green tritium lamps with a white outline. All Kensight sights are Wire-EDM cut from a solid block of 4140 steel not to be confused with other sights that metal injection-molded (MIM) or investment cast and heat treated to a hardness of RC 38-40 ensuring tight part-to-part fit and long-lasting durability. This sight fits the popular Novak LoMount rear sight dovetail cut often found on many factory produced and custom 1911 pistols. Specifications for Kensight SLAM Dot Fixed Rear Night Sight: Manufacturer: Kensight Color: Matte Black Green Tritium Dots Fabric/Material: 4140 Chrome Moly Steel Gun Type: Pistol Illumination Type: Tritium Illumination Color: Green Mount Type: Dovetail Package Contents: Kensight SLAM Dot Fixed Rear Night Sight Kensight 860-668: SLAM Dot Fixed Rear Night Sight Black