Ed Brown Products Tactical Edge Rear Pistol Sight 1911 .18in Height U-Notch .14in Width 65 degree Dovetail Black. Dovetail is 65 degrees x 0.495. Sight height is 0.325in. The U-notch allows for quick instinctive alignment with a dot front sight such as our fiber optic gold bead or tritium front sights. The rear is serrated at 40lpi to reduce glare. The front surface of the rear sight is steeply hooked to assist in emergency one-handed slide operation. Available in two notch widths. The 0.140in notch makes for a nice compromise between accuracy and a wider notch for quicker acquisition of a dot front sight. The 0.156in is typically preferred for the larger XS dot sights. Specifications for Ed Brown Products Tactical Edge 1911 Rear Pistol Sight: Manufacturer: Ed Brown Products Gun Model: 1911 Color: Black Fabric/Material: Bar Stock Steel Rear Blade Height: 0.325 in Additional Features: .140 U-Notch Condition: New Mount Type: Dovetail Package Contents: Ed Brown Products Tactical Edge 1911 Rear Pistol Sight What firearm models does the manufacturer say Ed Brown Products Tactical Edge 1911 Rear Pistol Sight is compatible with? The manufacturer says that Ed Brown Products Tactical Edge 1911 Rear Pistol Sight is compatible with 1911Ed Brown Products 956-U-140: Tactical Edge Rear Pistol Sight 1911 .18in Height U-Notch .14in Width 65 degree Dovetail Black