This Wilson Combat Battlesight Rear Sight of hardened chromoly steel has an improved sight picture, reliable adjustments and a superior fit in your revolver's frame. This heavy duty sight can make a great gun even better and allows for easy adjustment in the field. These sights have generous elevation and windage adjustment and are easy to install. The rear blade has radiused edges and is partially serrated to reduce glare and is a perfect match for the factory front sight. Note: This sight will ONLY fit new production Colt 2020 Python, Anaconda, and King Cobra Target models and will not fit any other older model handguns FeaturesBlade Type: Partially serrated U-NotchRear sight notch width/depth: .150" width, .099" depthDovetail: 2020 New Colt Python and Anaconda onlyElevation Adjustments: YesWindage Adjustments: Yes