Homemade guns have become one of the leading bogeymen of 3D printing. Critics fear that once 3D printing goes mainstream, there will be little to stop criminals from creating their own firearms at home before going out on the town for a night's mayhem.
3D guns have already made an appearance in the U.S. In fact, law enforcement and various branches of government are growing concerned about the dangers of 3D-printed guns. When design documents for a handheld 3D-printed gun appeared on a U.S.-based site in May, for example, the U.S. Department of State wasted no time in issuing a takedown order for the files.
The U.S. Department of Homeland Security has also warned against 3D-printed guns, and a New York City Councilman in June introduced a bill that would make it illegal for anyone but licensed gunsmiths to create 3D-printed firearms.
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