You should have the option to pick up weapons from dead team mates or enemies if your low on ammo,
People act like this never happened in real life, why do I have to wait for someone to drop a ammo crate, you should also be able to get ammo off dead team mates if they had the same weapon as you , if I was in charge of the development team i would have this in the next update, a long with 3 Italian maps,