I'm in the process of saving for a scope and I know USO's are top notch, but I'm probably only going to be able to afford a used one. So with that being said anything I should be on the look out for with USO's? Also what are some of the options that are a must and what are nice to haves? I just don't want to spend a bunch of money and be disappointed. I dont know if it matters but my project build is as follows Remington 5r mil-spec in .300WM on a AI 2.0 chassis with a badger ordinance 20MOA base. Thanks in advance for the input.