“Solid Concepts is a world leader of 3D Printing services, and our ability to 3D Print the world’s first metal gun solidifies our standing. The gun is a classic 1911, a model that is at once timeless and public domain. It functions beautifully.”
This is actually a manufacturing leap. Not an at home type project, as my understanding is that laser sintering 3D printing machines are extremely expensive. But technology gets cheaper as it ages (unless it is a medical device under FDA regulation). And the potential of this technology being affordable in 20-30 years is not an impossibility.
Metal production offers a lot of advantages over plastic, obviously. And this project appears more so to be used by a 3D laser sintering company to show how good the technology is; demonstrating the ability to produce a barrel that withstands high pressure, and the fine tolerances a 1911 pistol requires.
Either way, I find it rather exciting.