Your comment has struck me as (inappropriately) funny.
Your shotgun vs their car bombs/mortar attacks.
Not looking good for the home team (although I'm rooting big time for you).
My shotgun ... and then add the hundreds of thousands more guns aimed at them by patriotic Americans defending the country ...
Besides, you would be very surprised what a .410 shotgun slug can do to an automobile - and the occupants for that matter!
I would prefer my old M-14 though!