You wouldn't want to mount it on top of the handle. That would start getting ridiculous. What you would want to do in that case would be to mount it forward of the handle in a "scout" position. There are rails you can put on top of the stock handguards, or rails you can replace the handguards with, or even some rails that will attach to the carry handle and come down in front of it. Then you might want some risers to lift the eotech a little higher so you can see the whole picture without the sights getting in the way.