Sell some of those and you can spend more.

Steyr AUG and Tavor's seem to meet your criteria.

So would a Turkish AP5 or Mini-14 except for the mags.

I don't worry about the "grid going down" for an extended period because that would be a long death. Unless there was a place to escape to and I knew about it.

You would just live a little longer to suffer more. Don't worry about it. What's for dinner tonight?