OK. The AR newby is back. Now looking at a scope for my AR 15 DPMS Flattop. So, what should I be looking for a far as mounts. I will be putting a Nikon Black X1000 4x16x50 on it. I have one on my .20 Practical and like it a lot. I was initial thinking I would need at the very least medium rings. Then I see the, "cantilever" scope mount that facilitates correct eye relief and head placement for a AR. What are you guys using?