we must keep in mind that this is a soldiers rig. That probably explains the emphasis on weaponry and ammo. I would suspect that this individual is in better physical condition than the average office worker in North America - by a wide margin. If I were operating in a military capacity I wouldn't worry much about the weight of apare ammunition - I'd probably simply fill every pocket, pouch, pack, spare nook & cranny with all the weaponry I could in order to prevent becoming engaged in a fire-fight without any fire.