You've heard of the all plastic 3D printer-produced gun, "The Liberator." Now a gun has been "printed" in metal. The process still needs more work but this is great news that bodes well for the Second Amendment.
http://www.solidconcepts.com/news-releases/worlds-first-3d-printed-metal-gun-manufactured-solid-concepts/
Solid Concepts, a world leader in 3D Printing services, manufactures the worlds first 3D Printed Metal Gun.
Austin, TX Solid Concepts, one of the world leaders in 3D Printing services, has manufactured the worlds first 3D Printed Metal Gun using a laser sintering process and powdered metals. The gun, a 1911 classic design, functions beautifully and has already handled 50 rounds of successful firing. It is composed of 33 17-4 Stainless Steel and Inconel 625 components, and decked with a Selective Laser Sintered (SLS) carbon-fiber filled nylon hand grip. The successful production and functionality of the 1911 3D Printed metal gun proves the viability of 3D Printing for commercial applications....
The metal laser sintering process Solid Concepts used to manufacture the 30+ gun components is one of the most accurate additive manufacturing processes available, and more than accurate enough to build the interchangeable and interfacing parts within the 1911 series gun. The gun proves the tight tolerances laser sintering can meet. Plus, 3D Printed Metal has less porosity issues than an investment cast part and better complexities than a machined part. The 3D Printed gun barrel sees chamber pressures above 20,000 psi every time it is fired. Solid Concepts chose to build the 1911 because the design is public domain....
http://www.solidconcepts.com/news-releases/worlds-first-3d-printed-metal-gun-manufactured-solid-concepts/