had a 1x6 30mm vortex that the focus lens came loose on. It was mounted on my ar10. I took it off (the mount too) and shipped it to vortex. they sent me a new scope. Slapped on the mount and slapped on the new scope yesterday morning and went to the range. FIRST 5 shots went into just under an in 1.5 inches high a 100 yards dead center windage. Couldn't believe it so I gave it one click up (1/2moa)shot 5 more, same thing 2 inches high. Put the gun back in the jeep and took the next gun out. Sure wish it was that easy every time!!