My newest toy just arrived (several weeks ahead of schedule): an American Gun Craft 11", black powder, muzzleloader, double barrel 12 GA pistol. It uses 209 shotgun primers.
I'm thinking about getting or making a shoulder stock because this thing is hefty - really HEFTY (4.6 lb). The cylinder barrels are simply parallel holes drilled in a bar of steel. It has a single trigger and there's a lever on the hammer to choose the barrel. The grip and foregrip are rubber. It came with a ramrod. The primer pockets are in the breech plugs which are removed with a 3/8 inch socket wrench for cleaning.