If you have a 3D Printers, I suggest you try this:

Dfg

I found this article:
http://torrentfreak.com/pirate-bay-takes-over-distribution-of-censored-3d-printable-gun-130510/

and then I went to TPB and found these torrents:
http://thepiratebay.sx/search/defcad


TPD is a gem, I don't plan to use these but they might come in handy in future.

bornkiller

If I could afford a 3d printer, I wouldn't be wasting my time making guns. ... I'd be making vagina's

Dfg

Amen to that, i can see the appeal in it.