Very fast shooting

I found a cool glitch that only works if you are in mikko monomen(the skull on the x circle).

In order to do it, you need any character with two machine guns. I use biker baron. To shoot extremely fast, you need to grab any shotgun, grenade launcher in mikko monomen and only one of the shotgun or grenade launcher. When you run out of ammo your character will start shooting very quickly.