Do airsoft guns count? because i have more than a few (i've been looking for a good machine pistol/SMG to use as a backup)
https://www.evike.com/products/54975/ I probably would of already bought this one but i don't have the money and it would be a bit awkward to try and carry it because there's not really a holster you can get for it
https://www.evike.com/products/67369/ This one is one i probably wouldn't buy because it's green gas and that's expensive, but it's pretty much a bullpup glock, who wouldn't want that?
https://www.evike.com/products/32333/ I would buy this one right now if i had the money for it, the only issue is that the only magazines i found that are compatible with it are high caps and they're pretty expensive magazines