Very sweet! What kind of foregrip is that? I have the YHM floating with no rails, except on the gas block. I too am looking for the minimal recoil approach to my carbine AR. AND, I would like to put a Magpul Stock, on my Sig556, and probably a Troy Brake as well.
I too have not jumped on the optic/red dot bandwagon for my new build.
Good shooting.