I had a 16x42 ss mil quad, I tried hard to like the scope but sold it. The eye relief was so bad it needed 2 sunshades to be usable, ever then the eye box was so tight your eye needed to be dead center to see. I would get headaches and blurred vision every time I shot for over 5 minutes. These scopes are built like a tank mechanic outstanding, but not easy on the eye at 16 power. I replaced it with a Sightron S TAC 3-16×42 100 % better scope for a little more money.