@TheCombustionChamber At most, all it did was expend more rounds upon initial firing instead of storing up the small excess for firing via the discharge piston reset. Also, the selective fire in this save, by default, is actually set to single fire, for the rifle, thus in order to do auto fire, you have to set it to auto, as shown in the save's instructions.
Its a bit faster and shoots more constantly I think.
There isn't really much of a difference between the two, far as I can tell.
You can make it better and faster but still this is good.