Assume a complete breakdown of social order. Your rifle is mine, because you won't see me before I kill you and take it. But assume that I don't get it -- do you know how to reload your own ammunition? Do you know how to safely store rifle powder and primers? Do you know how much powder to use? What weight bullet gives the best performance? Most importantly, however -- do you know what to do when you run out of material to reload with, or when you reach the point that the brass cartridge cases are no longer safe or usable?

Assume a complete breakdown of the social order, I'd rather have one of these superweapons. Silent, deadly, and simple -- but you do have to learn to use it.