Kensight SLAM Fixed Rear 1911 Night Sight w/Flat Profile Black. The 860-668 rear sight features a recessed blade to Reduce glare a large relief cut for an excellent silhouetted sight picture andtwo .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. This rear sight comes paiRed with our standard tritium flat base front sight with a serrated blade. The set is sold with a 0.200'' tall blade but blade heights from 0.150'' to 0.220'' are available upon request. Compatible with Novak type front sight dovetail cuts (0.330" x 65 x 0.075") as typically found on both customized and factory 1911 pistols. Specifications for Kensight SLAM Fixed Rear 1911 Night Sight w/Flat Profile: Manufacturer: Kensight Gun Make: 1911 Platform Gun Model: 1911 Color: Black Fabric/Material: 4140 Chrome Moly Steel Gun Type: Pistol Front Blade Height: 0.16 in Illumination Type: Tritium Mount Type: Dovetail Package Contents: Kensight SLAM Fixed Rear 1911 Night Sight w/Flat Profile Kensight 960-668: SLAM Fixed Rear 1911 Night Sight w/Flat Profile Black