I was looking at survival guns and was trying to find a .22LR/20 gauge combo (the 2 most common rounds) , but it seems like nobody produces one these days. I saw the M-6 Scout, but it seems a bit too spartan. I have two relatively dumb questions. 1) The M-6 is nice in that it has 3 parts, barrel, pin, and stock. Obviously a semi auto will have a more complicated action. Is there a way to create an action that can be single shot or semi auto? I'm thinking in the case that the semi auto action breaks (hard to maintain during zombie apocalypse) it would still be usable for single shot? 2) How is the accuracy on these things? Could you get Savage nail driver accuracy? One that was a little more comfortable would be great too.