28, Yoshitomo Imura, was found guilty of making two guns at his residence and printing a video online detailing the process, said the Yokohama District Court.
“The criminal responsibility for this action is serious” as it could motivate others to replicate the act, said presiding judge Koji Inaba.
Imura, a former employee of the Shonan Institute of Technology, used information from the internet to create the two practical guns, in accordance with the opinion.
Then he posted a video online detailing how they were constructed by him.
Imura’s lawyers claimed that he didn’t understand his actions were illegal, a belief the court rejected.