I would ask why the short barrel? Why limit your possible mag capacity by using an 18 inch barrel, not to mention they don't swing nearly as smoothly.
My purposes would be centered on self-/home-defense, so I'd want it to be as maneuverable indoors as possible. I realize that this is where a tube-fed design becomes somewhat limited.
The above is offered as food for thought.
I can't see it either.
Aaron can bring down his M3, and I'm sure somebody here must have an 1100 Tactical they're looking for an excuse to show off!
Surely!