>>718902551
nta but 5.56 would be woefully underpowered for use in a fallout situation
it's the smallest caliber considered mostly acceptable for killing people, and gives up a huge amount of utility to get that small
so much so that non military actors typically prefer higher calibers, since they're not as worried about carrying 300 rounds instead of 200 and still being lighter, they're worried about actually killing their target and punching through drywall/car doors/light cover in general
5.56 isn't even a real machine gun, the SAW is a 'squad automatic weapon'
7.62 is acceptable for a machine gun if it has to be man portable, but only because it has to be man portable
.50 BMG is standard for a reason
since it's supposed to be able to take on super mutants and robots and other shit, 5.56 ain't gonna cut it
it's also a door gun on vertibirds, making it comparable to the door guns on hueys which used 7.62
just consider that 5.56 is considered too small to ethically hunt deer with, and does are VERY comparable in size to human men