fnbrowning,
I had one and sold it, wouldnt have another one. Way too much money I dont think it was worth it. And you are too limited on windage adjustments. I couldnt get enough right windage out it. It is heavy duty, but I have never had the need to use my rifle as a club, so I dont see the point.
As far as the williams sights go I have all 3. The FP, 5D, and WGRS. All are very easy to use and adjust. I think they are probably the best type sights for the money on the market. And I have never had a problem with them in the field. Matter of fact I just ordered a 5D and a green fire sight for my new 336 SC (new to me)