Got the first one and the scope was just crooked. the rails on the sides and the sight on top were obviously off. Returned it and got a new one that was satisfactory. Not perfect but for me it would be fine.
First time using it and I didn't zero it at all but was plinking pop cans from 40ish yards? I'm a bad judge of distance. It's hard to recommend with a side charging gun like the extar because the thumb screws get in the way. But for $60 I'm not sure you could do much better.