I am
here. The standard US Army M-16 is 5.56 mm, right? Our C5 Dimaco (an M16 built in license) was 5.56. My instuctor explained that an 5.56 propably wouldn't stop a charging enemy pumped up with adrenaline unless you hit some organs. Ithought the 5.56 was pretty much the standard in Europe/Western world countries as far as caliber is concerned. From the discussion above I gather that bigger calibre is. I do know that before this new generation of machine guns/rifles there we had the Fall, which was 7.62, which was the standard in Holland and many other counrties. I do think that the tendency is to go smaller in caliber.