Thingiverse no longer allows files that make it possible to print components of firearms.

The Wikiweapon Project lost its 3D printer.

defcad.org is setting itself up as another clearinghouse for STLs and IGSes of weapons components.

US Immigrations and Customs Enforcement can take that domain down at any time.

Here is a mirror of all of the files hosted at defcad.org as of December 24, 2012.