I have decided to look into the world of the "external scope adjustment systems". Ivey, Buckeys and some others. The variants of the "Unertl" that are produced today have caught my eye. Bob Brackney builds a system that Beggs has used, U.S.Optics builds a variant used on the SN-9. The u.s.o. aft portion is "a big one" to consider. Are there any photos of the Brackney system somewhere in the shooting world? I would like to see a close up of Mr. Brackneys before calling him. These are what I have found to date, are there others that anyone cares to suggest?