Kensight GI Series Square-Notch Pistol Sight Springfield M1911-A1 Front Black. When it comes to durability and features the Kensight sights far exceedcompetitors.sights are Wire-EDM machined from a single billet of 4140 chrome-moly steel. The result is a precision sight built with better materials and the Wire-EDM construction ensures the tightest tolerances possible. This translates to ultra-smooth adjustments audible clicks for both windage and elevation and consistent dovetail dimensions in which the ''industry standard'' CNC construction cannot compete. Backed by Limited Lifetime Warranty Kensight 1911 sights are premium quality and the first choice for factory-fit OEM manufactures competition shooters and professional's worldwide. Specifications for Kensight GI Series Square-Notch Pistol Sight: Manufacturer: Kensight Gun Make: 1911 Platform Color: Black Sight Style: Square-Notch Fabric/Material: 4140 Chrome Moly Steel Gun Type: Pistol Mount Type: Dovetail Package Contents: Kensight GI Series Square-Notch Pistol Sight What firearm models does the manufacturer say Kensight GI Series Square-Notch Pistol Sight is compatible with? The manufacturer says that Kensight GI Series Square-Notch Pistol Sight is compatible with 1911 1911 GovernmentKensight 870263: GI Series Square-Notch Pistol Sight Springfield M1911-A1 Front Black