This gun was shown first at "2008 All Japan Blowbacknized Plan" meeting, myself and Francky was there.
This guy, made this from scratcy. Surprisingly, modelgun is not his particular hobby in a past. I heard the guy is working at auto parts manufacturing company or something, got an approval from his boss to use NC machine after his work for the day.
Unfortunately, this is one off, not on commercial basis.....
S