Just about the same as 2.2, but with a 'magazine' that'll hold four bullets.
I say 'magazine', because it's not detatch-able and it'll only hold four bullets.
I'd say that this gun fires faster, but it fire much worse. Not that it won't destroy the crap out of towers, it'll do that.
It's that the gun will get a shell caught in the barrel allot of the time, because it removes shells with a bullet glitch of some sort.
I hope to greatly improve upon this gun, but it might take some time to get done. Tap Enter/Return to fire, and just drag a shell out of the barrel if it gets stuck.