So I'm not sure if the Ammo thing that hangs from the belt of the Gunbreaker is tied to the weapon or was just a design on the coat, but if it is tied to the weapon will it change appearance with the weapon?

One thing that has always bugged me is the fact that MCH's little box thing on it's side never changes appearance no matter what weapon you have equipped. Sam goes for the AST card holding sleeve on it's side. or at least then don't look different to me when you change weapons.