Following a series of tests the US Department of Homeland Security ran last month, New York Congressman Steve Israel and other Democrats are reintroducing the Undetectable Firearms Modernization Act, which died in Congress back in 2013. In 67 out of 70 tests performed recently in major US airports, TSA agents were unable to detect undercover teams attempting to sneak weapons past security checkpoints. A major component of the reintroduced legislation is the requirement that "certain major components of guns are made of metal so they can be detected," according to Rep. Israel. Because 3D printed guns rely significantly on plastic components, they are currently able to avoid detection in TSA security checks, and this legislation includes such weapons in its targeted aims. Read about the failed TSA tests and legislation proposal in the full story: http://3dprint.com/72213/undetectabl...arms-3d-print/