I wonder if anything like those Panzerfausts ever “fall off the truck?”
Some of the older *armbrust launchers [which fired a countercharge of vinyl streamers and could thereby be fired from an enclosed room] have indeed a*fallen off the truck* at BATUS in Medicine Hat. Nice little units. On the other hand, the original WWII Panzerfaust 60 design is simple and effective, and easy to copy.