And they're made be Weaver. Exact same as their "tactical" rings. Same price, too. I've got a set and they work.I bought them at Cabelas, They are Blackhawk
http://www.cabelas.com/mounts-bases-blackhawk-hole-tactical-30mm-weaver-rings.shtml
I have not had any problems with them between me and my shooting buddie we have 6 or 7 pair in use.
adjusts and returns by counting clicks