You may wish to email velocity arms and ask them, since its a custom gun by them all I can really assume is that it originally was a JG S system and they simply placed a clear lower on it, once again thats only an assumption. The retailer would know best.
JG is a fair company for the most part, they have come a long way in terms of quality, then again its not really hard to improve on complete utter crap. Now a days JG is considered fair and even fairly reliable.
"Its only a little bit on fire"