I purchased one from a member here a couple years ago. We were geographically co-located and I wanted to take advantage of the opportunity to link up and just to have a good look at it. It's a single-turn equipped with the H37 reticle. Spent about a minute or two examining it and I knew I had to have it. It wasn't a common scope for starters, and finding any information about it ,other than it was made to meet the requirements of an undisclosed US military organization, proved elusive. There was an article on the old Horus web site that talked about this scope a little bit. The scope was mounted on an M110 SASS I believe. i wanted to get in touch with the author of that article to see if he could provide more insight on the background, history, use, etc, but it appears that particular page no longer exists. Nevertheless, it's currently the best optic I own and I'm happy to be among the few lucky ones to score one at a good price considering the obscure and rare nature of this optic. I've only seen these pop up for sale once or twice since obtaining mine, and considering the price guys have been asking for them, I'm quite surprised they don't get snapped up in a hurry. Again, it could just be because they are not well known because there are so few out there relatively speaking, which makes it all the more satisfying for having the unique privilege to own one.