I'm not gonna act like I know anything about this but it's too cool to be forgotten. May I present you, a 1950's Taiwanese Prototype Sten Gun With a Folding Dadao Sword!!
Posted by Crashnburn802@reddit | ForgottenWeapons | View on Reddit | 1 comments
Here's what I do know:
Text translation: In the 39th year of the Republic of China, the 44th Arsenal made the type 90 submachine gun with folding broadsword.
Wolvenworks@reddit
now that's a gunblade