All the Canadian thermolds should work fine. The Orlites can work but it depends on when they were produced. They all have a lip along the side of the mag to help keep dust out, but the first ones produced put the lip too high up so the mag can't be fully inserted. Bushmaster was the only company this happened to because they made their magwells a little longer (about 3/16"). I have about 8 Orlites (out of the 12 mags I own) and they all feed and fit perfectly. I've never had a single problem with them! I went to a gun show and found a good deal, bought one and found someone selling bushmasters and tried it out. Once I found out it worked fine, I bought 5 of them for $50.
Hope this helps!