I don’t think getting hit by a M4 at 700 yards would be a pleasant experience either.
Define “win.”
The person still breathing.
No, the person that survives the encounter. You can get shot by either and continue to breathe for another 1-15 minuets while you watch yourself bleed out.
Completely and totally depends on “who’s most willing”. To quote my fave John Wayne movie quote.
If both shooters are “surprised” then the one that recovers first will usually win all things being equal.
But, this is kind of a stupid conversation…
If the M1 shooter has his bayonet mounted the M4 guy is in trouble. You can stab someone with that thing from down the block 