i also have that same leg piece
i put it up because whenever i try to use my short range weapons i usually crouch for accuracy and to become a smaller target but when the leg chameleon kicks in my gun forgetin disappears and suddenly i can't figure out where my bullets are going to go
so i got rid of it, and now solve problems pretty much exclusively by running at them really fast and shotgunning their richards off
or telling them to stop attacking, and then shotgunning their richards off once everyone has surrendered (which is apparently not at all amoral) (considering i can't get them to do anything else, really)
the trick is that enemies will almost never get the first shot on you, especially if you surprise them, even if they've been alerted to gunfire elsewhere unless they're using a large weapon like a missile launcher or minigun or something so as long as you don't forget up and you get the first hit you can shotgun juggle them to death
it somehow feels like a tactic though and not gaming the system because reloading takes a little while and during that period of time enemies will broadside the stuff out of you if there are any left in range, which means to play short-range shotgun you have to actually be playing the scout