Things I liked: Fixed the barrel droop problem on my 10 year old Diana 34. Excellent design. Absolutely solid after several hundred shots. I hadn't even heard of barrel droop until I replaced my old 3-9X Daisy scope (which had zeroed just fine) with a new Hawke Air Max. At first I thought I must have a defective scope but a little searching revealed the true problem.
Things I would have changed: The 20.7 inch drop compensation on this model is more than needed for my Diana 34 as my Hawke scope now zeros at close to the minimum elevation. The black finish had flaked off on a small region. Otherwise 5 stars.
What others should know: I matched this with low mount Leapers Space Age rings which work great. The base is fairly high and the low mount rings gave my Hawke 4-12x40 scope plenty of clearance without having to remove the factory sight.