Yes, it is the Dura Sight one piece mount and I was told that only a 40mm or smaller bell will fit. The 40mm almost touches the barrel now. But I see that scope is offered in a 33mm bell. Now that would interest me a lot. I think a 2-7 is about the perfect magnification for a scope where I live and hunt. Although I do like the 9 and 10x when checking targets.