What is the point to it, or why does it exist? I have a (fake) AN-PEQ15 that I tried putting on the top of my rail, instead of on the side, and I noticed that it blocked part of the sight picture through my Eotech. Would that be the point to taller bases/mounts that provide a lower 1/3rd co-witness? Clearing accessories mounted in front of optics? Wanna kill these ads? We can help!