Firing that M-2 would cause that "ship" to travel 40 knots/hour backwards.
Excellent for retreating, maybe they can sell them to the frogs.
I dunno. 50-cal BMG ammo is going for $3.99 a round (tracer...I think ball ammo is a little less) on Cheaper Than Dirt's website...I doubt Canada's defense ministry would be willing to part with the kind of money it would take to feed a Ma Deuce. Maybe someting more of the rubber band powered variety?
Scouts Out! Cavalry Ho!