Damage per area hit with firearms.

This may be planned down the road, but it would be nice to have areas deal more/less damage. This is certainly most notable with headshots. Unless I’m just really bad, headshots don’t seem to impact damage, and its always two bullets to kill with the AK rifle, and 4 with the pistol, It would be nice if headshots were an instant kill or at least higher damage. Along this lines, not a necessity but limbs dealing less damage then torso could also be a nice touch.