Well heres a few questions for you and anyone who has been complaining about GBB's doing this:
1. Have you ever used propane in your gun? even just 1 or 2 shots with it
2. Have you ever used red gas in your gun?
Propane WILL dry out your guns seals and orings, and if your orings are cracked or damaged, this can be the cause of gas spewing out or leakage. Buy replacement orings for every part of your gun, fill valves, flow valves etc and then lube them with 10,000wt 100% silicone oil and get it on everything that moves against the orings. Then see if the gun works the way its supposed to.
EDIT: Also, seals and orings can crack and dry out on thier own during shipping..Say if there was alot of temperature changes or sudden changes. Stuff happens, so its not always the company's fault.
KJW is an all around good company, but just remember, GBB's need more care than most other airsoft guns(if not all) because they are more prone to getting dirt in/on them. THe smallest particle of dirt could ruin your GBB day if its in the wrong place.
Hell, ask Ben, I dropped my para on the start of the first game yesterday in some dirt, I thought i would have to take off the slide and clean it to get it to work. There was a little bit of a grinding sound when the slide was pulled back, and the entire fill valve hole had moist dirt in it. I just used some green gas to blow out the dirt in the valve, shot a mag thru it with no bb's and it worked perfect all day. I even got 3 or 4 kills with it during the pistol games. Of course I did clean it and relube when I got home, but it held up all day(about 12 mags worth) without a single problem,misfeed, or crappy shot.
I hope this helps. :arrow: