Im getting this emag is a trade

It was supposidly "fine tuned" by and AGD tech in the beggining of its life (batterypack removed and everyhing runs off of it). It is still has the old Super bolt. And the guy said it doesnt work any more so im getting a really good deal. He claims that the valve was honed out for lower pressures....but i thought that was all a mith with mags....anyways...i was wondering if any one working at AGD can tell me what they know about this emag. And the emag supports all mag bolts right?

thanks