Within the world of 3D-printed guns, one pseudonymous figure has emerged as a symbol for the cause of universal access to firearms: “JStark1809”. He created the world’s most popular 3D-printed gun and established an influential network of 3D-printed gun designers. Since his death in July 2021, he has been memorialised as a martyr for the right to bear arms. Based on open sources, this report identifies “JStark1809” as Jacob Duygu, a German national born to Kurdish parents who arrived as refugees from Southeast Turkey in the 1990s. Using a combination of authorship attribution techniques, JStark can be identified as the author of over 700 seemingly “anonymous” comments on 4chan’s /pol/ board. He disclosed hitherto unknown details about his life, broader political views, and extremist attitudes.
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