catgirls rule~

she already leaves her pawprints on my back.. i do not need more...

I feel like there would be a catgirl-shaped hole in the other wall.

Narrator: but in reality, it left one gigantic hole, and nobody ever knew by looking at it that more than one shot was fired.

Looks like a gun cat themed pirates would have in One Piece.

as a non American, can someone tell me if it's real/novelty/ actually shots?

These are commonly called "combination guns". Usually you get 2 different calibers, typically one shotgun and one in a rifle caliber. They were used in hunts where you'd encounter different types of game (requiring different calibers) or one type of game at different distances (imagine shooting relatively far at a large animal and using a rifle, then it turns and runs towards you so you can quickly switch to a shotgun with a slug load).
Often these are called "drilling" guns, with the rifle caliber in the middle. This one is fairly unique given the number of barrels, and that they all look like shotgun calibers. My guess the big one is probably a 10 gauge in the middle.
I usually associate these types of guns with African large game hunts, and British or German manufacturers.
These are pretty rare nowadays, they're crazy heavy and modern loads can compensate for the shortcomings old loads encountered.
- Yeah, not 100% sure but that looks like maybe... 4 .410 barrels and one 12 gauge, possibly 10 gauge as you say?
  My guess would be this thing has at least two triggers, its got two visible ... percussion cap? hammers?
  I... I think this is like, a modern, custom, 'reproduction' type thing...
  I guess its possible it could be an actual like... 150+ yo custom gun?
  That... seems less likely though?
  Also... presumably that little flipper like thing on the right of this image, and... probably at least one other lever, maybe further down the butt stock, out of frame... would be needed to switch between different 410 barrels or the 12 gauge barrel, or ... something?
  Unless it just fires ... everything at once.
  Which... is possible, but that'd knock probably most people on their ass or fly out of their hands or break your collarbone/face lol.
  But yeah, a total of 5 barrels is so uncommon I am inclined to think it is at this point basically a one of a kind heirloom, or more likely a more modern custom job by a gunsmith who specializes in wacky shit, lol.
  Could be percussion caps, could have a stiker firing mechanism that just looks like the old school percussion cap style hammers externally...?
  ...
  My family had at one point an over-under rifle/shotgun combo, but it was just .22lr and .410, just two barrels, break open... but from like the 1950s or 60s, with more modern firing mechanisms.
  It had one trigger, and a sort of switch/lever to change the single hammer from striking either chamber, and then a button, kinda like a mag release on a pistol, to allow you to break it open to extract and reload.
  Think it might have been a Savage 24, wood housing... but the stock actually developed a nasty crack and iirc, we just sold it at a discount to some gunshop who would replace the stock and then sell it.
  https://en.wikipedia.org/wiki/Savage_Model_24
- thank you helpful American.
  that was actually very informative

She'd better know how to plaster if she's gonna do shit like that. Or be quick on the reload and force me to do it I guess. I'm fine with either.