I have two Bushmaster flat-top uppers. Both front sight bases are canted to the right. The older I purchased from a friend is not canted as bad. I don't know when it was manufactured. The newer I bought in early '04 is canted more....I don't run out of windage to be able to zero like the trouble some people are having. It doesn't appear they are fixing the problem. I think Bushmaster is quality, but I'll most likely purchase elswhere for my working guns in the future. Atleast the uppers. Now in my case "most" is accurate, since I appear to be batting 100% with canted front sight bases. I'll have to take a peek at some of our dept. rifles and see if they are canted as well. Seems to be a common problem with Bushmaster owners on this board. Unless several people are just "recalling" some info. they heard from another guy who heard it from some other guy.