I posted a while back that I was a little unhappy with the Magpul MBUS for my primary sights and I have been looking around. Decided to go with the LMT BUIS, essentially a AR style carry handle/sights without the handle. I had originally intended to not buy optics so not being able to fold down wasn't a big issue for me and these seem sturdy enough for primary use. I figure if I do get optics I will throw the MBUS back on there since they will be backup at that point. Just thought I'd share with the group. Now I wait for the mailman.