If the time ever came that I was so desperate that I had to fabricate a weapon, a fine and usable 12-gauge single-shot can be made from a metal pipe and a piece of wood. Not elegant, but durable.
Sure, but if you should have to make, oh, a thousand or so...can’t imagine why anyone ever would...I mean, who would ever want a thousand temporary guns? Well, except for a thousand people without them, that is...