Original U.S. 1960s Extreme Velocity 20mm Fuze Military Test Round Made With Modified WWII 40mm Casing Russian Artwork & Posters which reads RPB for Robert

which reads RPB for Robert P

There is a repaired crack on the underside of the fore stock

and that was years ago

Markus came up with the invention when he was living in Minnesota

and went to work as an aviation adviser and trainer in China

Original U.S. 1960s Extreme Velocity 20mm Fuze Military Test Round Made With Modified WWII 40mm Casing Russian Artwork & Posters which reads RPB for RobertOriginal Item: Only One Available. Totally inert and demilitarized according to BATF guidelines with hollow body and inert fuses. This is a display piece and is not filled with any explosive content, nor can it be converted into an explosive device. Unloaded or dummy grenades, artillery shell casings, and similar devices, which are cut or drilled in an BATF approved manner so that they cannot be used as ammunition components for destructive devices,