I'd like to buy one of these but struggling to find a typical 'fan' website to explain the different models and revisions. Anyone help with the history or with links for these?

And they are obviously plentiful on eGun in Germany, anyone bought a gun from there and had it shipped before? I've had the odd spare from Germany but a whole gun is a little more of a plunge.

There are quite a few on http://www.versandhaus-schneider.de/...0_1678_942_162 but dealer prices of course...