According to the comments on that Idohoan Show video CVA apparently made a muzzleloader called the Electra. And yeah, that looks fairly similar to what I had imagined in my head when I made the comment.
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The only thing I was thinking of adding was a little dynamo crank handle, kinda like one of those emergency weather radios has where you turn the handle to charge the battery. But that's not strictly necessary and is a total prepper crowd addition. You
could even do something even sillier with putting a solar panel in the stock or something.