I can speak to the quality of the airsplat bbs. There better than matrix In my opinion. There really polished and high quality, pretty sure there AE rebranded. My field sells the AS 5K bbs for $5 on Thursdays.
Well if you noticed they no longer have real trades. It now says Milspec, also that G looks nothing like the glock trade mark.
Also Airsplat carries the KSC g17 for $160. Doing the calculations its actually cheaper from airsplat than ehobby asia.