The build quality seems really good and robust and the dials are very nice and have a great feel when adjusting. The problem for me is there is a lot of image distortion around the outer edge of the glass in certain magnifications and when zoomed all the way out the marks on the retical are so small that they are unusable. I really wanted to love this scope but this model was a suprising let down. I plan at some point to try another model from Discovery Optics that is on the upper end of their optic line in the hopes that it will be more usable. Ive been a fan of Discovery Optics for awhile for their quality and affordability.