I had a set and they were not collimated correctly. The barrels were not lined up. I sent then in for repair and CS tried to charge me. They finally conceded they would do the repair for free. Beside that, the optical quality was poor. I am not overly mad a Steiner, but they are forever on my banned list. I don't know if my comment is very valid. This occurred 15+ years ago with refurb military model. These were bought from SWFA sample list.