Manufacturing firearms is subject to a complex landscape of federal and state laws. DEFCAD - The world's largest 3D gun repository

Here is the informative story of how DefCad became one of the most controversial repositories on the internet.

: DEFCAD is a major sponsor of DIY gun development, allowing developers to earn money for their project releases. FAQ - DEFCAD

In its early days, DEFCAD operated as a free, open-source library. However, the US State Department intervened, citing International Traffic in Arms Regulations (ITAR). For years, the files were shuttered, removed, or placed under strict injunctions.