Seized plastic handguns which were created using 3D printing technology are displayed at Kanagawa police station in Yokohama, south of Tokyo, in this photo taken by Kyodo May 8, 2014. Yoshimoto Imura became the first man to be arrested in Japan for illegal possession of two guns he created himself using 3D printing technology, Japanese media said on Thursday. The 27-year-old, a college employee in the city of Kawasaki, was arrested after police found video online posted by Imura claiming to have produced his own guns. Gun possession is strictly regulated in Japan. Police raided Imura's home and found five guns, two of which could fire real bullets, Japanese media said. (Photo by Reuters/Kyodo)

A soldier poses with a Hythe Mk III Gun Camera during training activities at Ellington Field, Houston, Texas in April of 1918. The Mk III, built to match the size, handling, and weight of a Lewis Gun, was used to train aerial gunners, recording a photograph when the trigger was pulled, for later review, when an instructor could coach trainees on better aiming strategies. (Photo by Harry Kidd/WWI Army Signal Corps Photograph Collection via The Atlantic)

A military police officer aims his gun to a demonstrator during a protest in Brasilia, Brazil, Tuesday, April 7, 2015. The officer had picked up a bottle that was thrown towards them but did not fire his gun and backed away. Thousands of workers have staged rallies in 12 cities across Brazil to protest against a proposed law that would allow companies to outsource their labor force. (Photo by Eraldo Peres/AP Photo)

In this image released on September 22, Filipino-American social media personality and singer Bella Poarch attends Rihanna's Savage X Fenty Show Vol. 3 presented by Amazon Prime Video at The Westin Bonaventure Hotel & Suites in Los Angeles, California; and broadcast on September 24, 2021. (Photo by Emma McIntyre/Getty Images for Rihanna's Savage X Fenty Show Vol. 3 Presented by Amazon Prime Video)

In this image released on September 23, Puerto Rican model Joan Smalls is seen during Rihanna's Savage X Fenty Show Vol. 3 presented by Amazon Prime Video at The Westin Bonaventure Hotel & Suites in Los Angeles, California; and broadcast on September 24, 2021. (Photo by Kevin Mazur/Getty Images for Rihanna's Savage X Fenty Show Vol. 3 Presented by Amazon Prime Video)

The bisexual glamour model, UK “Ex On The Beach” star Jemma Lucy poses naked and flashes extensive tattoos in X-rated shoot as Margot Robbie’s “Suicide Squad” character Harley Quinn. (Photo by Xposure Photos)

The HFR x LeBron 16 shoe is unveiled at the Harlem Fashion Row show and awards ceremony before the start of New York Fashion Week, Tuesday, September 4, 2018. (Photo by Diane Bondareff/AP Photo)

Doutzen Kroes and Candice Swanpoel arrive at the Mert Alas x Marcus Piggot book launch party at Public Hotelon September 7, 2017 in New York City. (Photo by Pierre Suu/GC Images)