Acog with red dot, or that new eotech with the bullet drop markers... that leupold is too big. way too big. for me of course. looks heavy too. too much to look through for as well. range, walking, or put away waiting on zombies... mine sits with the eotech on it. i put that red dot on my TA01NSN, still my main rifle has the eotech on it. I would switch to aimpoint, but i like my 1 MOA dot and ring on the eotech. one day i might get that tri power to check it out. i still do not think anything out there is as fast as the eotech.