Sorry for the pictures, I am uploading a video of the problem on youtube, won't be long.
Thank you
edit: ancorp, you may be right, the grip panel is not on yet, but I don't remember this spring when I stripped the gun. Maybe it flew and I didin't see it, maybe it was not there at all
anyway, Where can I find a replacement spring ?
YouTube - KJW M9 problem
Heres the video. when its upside down it fires. Don't mind the crappy quality, Webcam video, and don't mind the speed Youtube messed up on that too!