I gotta go with nunchuks. Anything you sling around on a chain seems silly to me. It seems like nunchuks are only good weapons against the unarmed. Anyone else has more range, usually something sharp in play and there isn’t a limp chain in the middle reducing the force of your strikes.
My vote is for early chemical weapons (like the kind they pumped out via hoses) because the wind would change and they’d poison their own guys. A liability that big is it’s own kind of stupid.