Hi Guys,
My first post on the doctor's corner. I did a quick search couldn't find anything so far.
FYI I'm new to Airsoft, but any help or comment is welcomed.

I got a KJW GLOCK 23 not too long ago, never fired it till today. I put in about 10 BB into the mag, put in some Kingsarms Green Gas. Gas Can was on bottom, mag on top, pressed down 2-3 sec. Removed, and pressed again for about a sec just to make sure its full. Loaded into my pistol, and tested.
First shot ok, no problems. Continued to test. About 4th - 5th shot in, gun won't fire.
Removed mag, cocked the gun a few times just to check any jammed BBs, there was one and it came out. Put mag back in and off we go again with testing... However, the gun won't fire anymore... *click click*
Removed mag, checked chamber again by sliding to make sure its empty. I pressed the gas discharge button on the mag - NOTHING! There was no gas inside to be discharged!
Ok, I thought, maybe I didn't pump the gas chamber full, tried it again - same thing... Only will fire about 4-5 shots, then out of gas apparently.
Am I save to assume its a Dead On Arrival mag? I am emailing the supplier as we speak....