i have combat experiance with this system. well the Eotech w/ aimpoint 3x flip to the side and twist modles. over all i have always loved the eo-tech now adding the ability to use a quick monocular function just by flipping it up good. BUT most of the time in a combat situation its useless, you will find yourself just useing the eo-tech as it was made. i mean we should be able to land killing shots at 300+ open sites reguardless.
but if you find yourself in the situation where you can setup IE: ambush or small kill teams or recon something of that sort where you can use the monocular function and not have to worry about reacting immediately its awsome.
but all in all haveing it set up is good and you can just take it off and put it on at will anyways besides just being able ot flip it down and up.
the release is fast and there is no wobble in the optic. easy to reach from the ready position, and there is no interfearance with it being set back so far on the rail when going from the low ready to the ready and fire.
solid all around withstands the normal bumps and falls of a typical combat weapon system. to include falling on it, climbing walls and buildings, ladders, ropes, chopper doors, and haji doors.
have also seen on a H&K 416 the acog w/ "ultra mini eotech like" red dot holographic mounted on top. impressive to see but would perfer the eotech/aimpoint optic.
as far as acog goes, not to shabby but never impressed never held its zero for long after intermitent fire fights or falls and bumps.