The U.S. government has demanded that a civil society stop providing plans to manufacture firearms using 3D printing technology on the Internet, warning that this could be a violation of gun control regulations. The BBC reported on the 10th that the U.S. State Department sent a letter to Cody Wilson, founder of the 3D printer gun designer's "Defense Distribution," asking him to "remove the 3D printer gun design from publicly available channels" until he was able Proved that the provision of drawings on the Internet and allowing downloads outside the United States did not violate the arms trade regulations overseas. Defense Distribution has pulled out a 3D printer gun from one of its Web sites. However, the design has been downloaded more than 100,000 times and seems to still be spread through other U.S. websites and between some Internet users. Defense Distribution, located in Austin, Texas, took about a year to manufacture guns using 3D printing. The first 3D printer gun on the 4th in Austin test-fired success. In addition to the firing pin for the metal, guns all the parts of plastic, printed by the 3D printer, respectively. Many Americans worry that 3D printers are getting cheaper and the average person can get designs from the internet and print items at home. Dangerous items such as firearms, also manufactured using 3D printing, may exacerbate the proliferation of firearms.