I have two of the luepold Mark AR 6-18's and like them a great deal I think it may very well be the same basic scope as the VX 2 6-18 CDS. I shoot at 1000yds with mine regularly not as clear and crisp as my buddy's Nightforce or VX 6 but he doesn't really seam to be able to see hits at that distance on steel much better then me so I have little incentive to upgrade, zero stop would be very handy however.