Another vote for the BSA 30mm red dot. I put one on my (gasp) Colt preban 16" ltwt with one of those Leapers carry handle mounts. I have had it for 4-5 years. A month ago, I put the carry handle mount and scope on the rifle, and shot a 25m zero. Ten shots in a nickel sized group, and dead on target, even after a bunch of travel/storage and repeated removal and installation of the carry handle and scope. The mounting clamp on the BSA is a little chintzy and not quite square. That said, it works well, and I even like the sight picture better than the Aimpoint Comp M, with the BSA a two eyes open sight picture seems cleaner to me because the scope body is a lot smaller on the BSA in relation to the lens, than on the Comp M. Durability is most likely a whole different matter. I don't abuse my guns THAT bad.