Kensight Ruger SR1911 Target Flat Base Sight Set w/Rounded Blade Black. It has rounded fully serrated blade. No modification to the slide is necessary (only minor fitting). This rear sight comes paiRed with our flat 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. This flat base is ideal for those with a flat-topped slide or for those intending to file and blend the front sight base to match the contour of their pistol's slide for seamless installation. 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 65 x 0.075") as typically found on both customized and factory 1911 pistols. Specifications for Kensight Ruger SR1911 Target Flat Base Sight Set w/Rounded Blade: Manufacturer: Kensight Gun Make: 1911 Platform Gun Model: 1911 Color: Black Fabric/Material: 4140 Chrome Moly Steel Gun Type: Pistol Mount Type: Dovetail Package Contents: Kensight Ruger SR1911 Target Flat Base Sight Set w/Rounded Blade What firearm models does the manufacturer say Kensight Ruger SR1911 Target Flat Base Sight Set w/Rounded Blade is compatible with? The manufacturer suggests that Kensight Ruger SR1911 Target Flat Base Sight Set w/Rounded Blade is compatible with 1911Kensight 932-063: Ruger SR1911 Target Flat Base Sight Set w/Rounded Blade Black