I'd like to know the answer to this question also, ESPECIALLY since Nikon dropped their big bomb on us. Loved their 2X, and 2.5-8 BDC setups. BDC was OK, most of their horizontal plex reticle subtensions were just right for windage apps., and the low profile target turret was excellent. Darn shame they couldn't have just contracted out at least some of their scope models.