I posted it as an adaptation of that idea for airsoft use. Of course not as powerful, that would be crazy! I posted a design similar in concept to that on ASR, I didn't get much feedback from the Americans though. Maybe MadMax or Gooseman would be interested in building my design and collaborate. Not the above design, but from my sketches. But my design was to use a solenoid to push/pull a piston to propel the 6mm BB. I'll have to find it. I'll also post scans of my sketches as soon as I get a chance. Oh and my design was for a pistol, but can easily be adapted to an AEG. That would be perfect, it would have no moving parts except for the piston, no stripped gears and would have kick to boot!
Cheers,
Ray