Close-range fights feel a little different after Modern Warfare 4's first major weapon tuning pass. The ISO Nightshade and VEL 46 both received a 5 percent increase to their arm and hand damage multipliers, so those messy fights where your crosshair drifts off the chest should be more forgiving. If you're trying out builds in MW4 Bot Lobbies, pay attention to how often you hit arms while...