On Fri, 11 Mar 2016 07:49:32 -0600, "Ryan P."
wrote:
The MP 15/22 can keep some lead in the air, and as we all know, semi is more accurate than full-auto. And is less wasteful of ammo in the post-apocalypse. They ain't making more! 
There's always the option of reloading the cartridges yourself. I
can't imagine that's particularly fun with .22lr though...
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Reloading 22LR is impossible as far as I know. The problem is that
the primer is an integral part of the shell case, not removable as it
is with a center fire round.