@zavalon6840 yes it has been unintended for 3 years. No, that is not faulty logic. This specific double gun exploit hasn't been widespread abused until the past 6 months-ish as more and more people have known about it. And yes they clearly patched fast switch / fast fire double gunning out before... tried to, anyways.
I can't believe how important it is for you to maintain an exploit over people.
I want you to show me anywhere ever that rare has acknowledged this as being intended or any type of training or guide that rare has ever put out that would condone such a thing. You can't find that and you won't find it because it doesn't exist.
It is so painfully broken the only way anyone would ever defend this is if they felt the need to abuse game mechanics for an advantage.
If they flat out can't figure out a way to code it out (don't believe that) then perhaps the best course of action is to force all players to carry the sword in 1 of their slots and 1 gun and let it be settled and done.