Kensight Contoured Base Fiber Optic Pistol Sight Set w/Rounded Blade Ruger SR1911 Front Black. It has rounded fully serrated blade. No modification to the slide is necessary (only minor fitting). This rear sight comes paiRed withcontoureed base fiber optic blade front sight which incorporates a bright fiber optic rod that draws the shooter's eye to the front post for sight acquisition and recovery. Wire-EDM machined from 4140 chrome moly steel and heat treated to a hardness of RC 38-40 this front sight is definitely going to withstand the test of time. This sight comes with a 0.100'' wide blade that is partially serrated. the Fiber optic rod is 0.060'' in diameter and is well shielded while also offering superior visibility. Compatible with Novak type front sight dovetail cuts (0.330'' x 65degrees x 0.075'') as typically found on both customized and factory 1911 pistols. TECHNICAL INFORMATION: Material: 4140 chrome-moly steel Sight Body Dimensions:1.426'' x 0.71'' x .432'' Blade Notch Dimensions: 0.134'' x 0.090''. Authentic Kensight Sights - The Professional's Choice This is an authentic Kensight sight and not to be confused with other brands. 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 Contoured Base Fiber Optic Pistol Sight Set w/Rounded Blade: Manufacturer: Kensight Gun Make: 1911 Platform Gun Model: 1911 Color: Black Front Sight Color: Black Sight Style: Contoured Base Fabric/Material: 4140 Chrome Moly Steel Gun Type: Pistol Sight Position: Front Mount Type: Dovetail Package Contents: Kensight Contoured Base Fiber Optic Pistol Sight Set w/Rounded Blade What firearm models does the manufacturer say Kensight Contoured Base Fiber Optic Pistol Sight Set w/Rounded Blade is compatible with? The manufacturer suggests that Kensight Contoured Base Fiber Optic Pistol Sight Set w/Rounded Blade is compatible with 1911Kensight 942063: Contoured Base Fiber Optic Pistol Sight Set w/Rounded Blade Ruger SR1911 Front Black