I've got a bow with an HHA sight system ,, my "good Bow" . Mine was very simple to set up ,, and very accurate . I can hit somthing about the size of a soft-ball at 60 yds on a calm day . Thats a hell of a long shot . I have to say this about it ,, I fear for it's ruggedness ,, I don't have a good reason - just too many parts . I should mention that I'm rough on my equipment . I would not use this sight on game youwouldnot like tolose . This is only because there is only one aiming point ,,, therefore you need to adjust it according to your shot ,,, so if you have to make a fast shot on a trophey animal ,, you better know your hold-overs . That being said - I hit rabbits at 40 yds with mine ,,, it's awesome .