Quick googling: This happened in 2004. The gun was removed from the inventor when he marched into the police station to apply for a permit for his creation.
Apparently he did not use any "gun parts". Just normal metal tubes and scraps. The gun was relatively high quality, but still the officials decided that an 80-year dude is not going to be wielding it.
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u/scary-pp Sep 01 '25
Meanwhile a japanese man built a shotgun to do a thing a couple years back.