I have one that has the red dot mount machined into it. Lowest you can go. It's the primary arms/mdl-06 bundle. For the sake of disclosure, I did have trouble getting it to remain zero a little while back, but I bent the retaining tab just a hair and now it works good. I love the red dot but the astigmatism in my right eye is jacking it up for me. I'm going back to irons. I'll sell the whole package for $185.