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Senate extends plastic gun ban

With advances in 3D printing, gun safety advocates were increasingly worried about guns that could slip past metal detectors.

Cody Wilson with the first completely 3D-printed handgun, The Liberator, at his home in Austin, Texas on May 10, 2013.
Cody Wilson with the first completely 3D-printed handgun, The Liberator, at his home in Austin, Texas on May 10, 2013.AP

Michele Richinick