Originally Posted By: Brian
Watch the movie titled "Utu". The one guy makes up his special double. You have to see it.

I have not seen "UTU" so cannot comment on that in particular.
Maori used double barrelled shotguns("Tupara"or two barrels) to good effect during the Maori land wars 1860-72. They were muzzle loading guns loaded with conical or shot and were usually elaborately carved.
Here's a typical example.
http://collections.tepapa.govt.nz/objectdetails.aspx?oid=49791