I just saw the 4500 for the first time at a LGS, and I don't think they are, but I don't recall trying to pull them up either. I just rmember I liked them a lot more than the older version on my 4200's cause they were taller. Not tall like a target turret, just tall enough to be easily turned and seeing the adjustment scale on the side instead of on top. Says on Bushnell's website that the new turrets are resettable to. That's a plus for certain.
