FWIW....I would stay away from the Millet DMS-1. I have one...wouldn't recommend it to anyone. First time I gave it a good thump during some range drills, the illuminated reticle stopped illuminating. That didn't make much of a difference though because it wasn't bright enough to see on a sunny day. It weighs 1 1/2 pounds....too heavy in my opinion for an optic of that power range. Aside from the previously mentioned issues, and the distortion viewable at the edge of the glass, it's really pretty good.