In the late stages of WW2, the Nambu Arms Manufacturing Company in japan presented a shotgun after the Imperial Japanese Army requested for an effective close combat weapon to be used in close quarters fighting or banzai charges. The Nambu Arms Manufacturing company also came up with the Nambu 6 gauge shotgun round.
Indeed the design looks way too unorthodox.
I only found this image of the weapon with almost the same description on Deviant Art so its probably fanmade.
The picture looks edited and nothing else exists of it.
The guy in the forum said it get it from a old japanese nambu firearm book,and reubilded the image, i give him the benefict of the doubt because i dont find nothing about what shotgun model japanese use, just they used it
Japan did buy a number of pump-action shotguns so I doubt they couldn’t reverse engineer that, but that is true that Japanese war industry was more suited for bolt-actions.
True enough, half of the Japanese weapon listed in the ww2 are just bolt-action , is not impossibile they builded some weird bolt-action shotgun and forget it during the war
Even after the buff shotguns are so rare in matches. I only have 2 shotguns for my entire axis army and using them just for fun. I rarely saw anyone above br 2 using shotguns widely. Do we really need a shotgun for japan ?