A group called Defense Distributed is attempting to raise money via IndieGoGo in order to produce a printable firearm.
DefDist will build and design a 100% 3D printable gun for the purpose of porting to a RepRap printer. The result will be an easily accessible and replicable design shared with the world. At this point, any person has near-instant access to a firearm through the internet.
via Defense Dist. 2) Adapt the design down to cheaper 3D printers.