I had a leak on one of my m9 mag, coming from the filling valve. So i made a quik search on google and i found this. I try it, put my valve apart. made it soak in oil all night, strech the spring and put it back together and it work perfectly for me.
I made my own picture , but don`t no how to put them on a post ???
http://www.airsoftportal.ph/forum.ht...atid=33&id=212