Things I liked: Made of solid metal, nice click adjustments, seems to hold its zero just fine. My son just outshot everybody in his 4H annual competition with this sight on an RWS 34. It works well.
Things I would have changed: I'll echo what other reviewers have said. First, you will need a tall front sight for this; your existing front sight will probably not work. I fashioned one out of a 1" tall stainless steel bolt and it works well. Second, I had the same problem one other reviewer had, with the jaw of the clamp snapping off as I tightened it down. It seems to continue to work okay, but I was surprised. Be careful as you're tightening this thing down.
What others should know: Has its relative flaws, but for the money it's a very good deal. Yes, I would buy it again.