I made another one of these mic cases out of a pistol case. This one is claimed to be a two pistol case, but it holds my three M-Audio Novas nicely.
It’s a pretty good case for mics but I don’t think it’d be a great pistol case because the egg crate foam doesn’t line up the way it should, and they seem to know that, and left space to compensate. That’s fine if you’re dealing with big microphones, but not good for small mics or pistols. My other cases, the foam lines up right, so you could use them for smaller mics.