i was wondering, in call of duty 4 do the weapons upgrade in multiplayer? i know that you can pick your weapons in the custom class settings but im talking about the normal classes that u start out with (assault, spec ops, sniper, etc) or do the weapons in those classes stay the same? also, i was wondering why the russian guys in multiplayer spawn with m-16's, mp5's etc. instead of ak47's, skorpions, u get the point.

thx