Eric, in retrospect I agree that the dovetail is pretty deep. This sight came with the kit so I didn't think about that when I started cutting. When folks on another forum starting pointing out the same thing I went back and did some measurements and I think I'm okay as this is a rather thick walled barrel. I could have reduced the thickness of the sight base with a file, or separately ordered a sight with a thinner base but that is the kind of thing that can happen when you don't know better. I think your suggestion of filing the sight base to fit is a good one. I did not think of that but I went really slow and got it to fit nice and snug the first time - beginners luck I think, but I'll take it.