Depending on your viewpoint, Cody Wilson’s 3D-printed gun is either a terrible blow to sensible gun control or a glorious triumph for 2nd-amendment enthusiasts. But Slate’s Will Oremus tells observers on both sides of the debate to calm down because Wilson’s gun is neither entirely 3D-printed (the firing pin is metal, not plastic) nor is it a terribly effective weapon (yet). [Source: Slate]