A one use, one rd gun?
No not at all a recent video posted on YouTube show 600 rounds being fired thru one.
Watch Video at this link:
http://www.youtube.com/watch?v=SZRUpmMIQy8
Thanks, I was just going by what I read at http://defensedistributed.com/proofgun-2/
These guns will be almost completely plastic, so melting and failing in your hand will be a concern. Only after a battery of testing the best designs to failure will we find the way to rate a WikiWep as safe for one use.