This is a beautifully hand crafted front globe combination sight for your Winchester and Remington rifles. They were a special order option on the Winchesters and the Remington rifles from the factory. (made in USA) It fits the 3/8 inch dovetail slot that is milled into the Forearm of your barrel. You are able to view your target through the globe or flip the globe down and use the open sight. This is a very nice piece that will add value to your rifle! The height from the bottom of the sight to the top of the little vieWinchesterg post is .40