I bought a used M11 with 2 mags from GAME ON yesterday and I seem to be having some difficulties with it. When i tested it out at the store it worked great but now when I was messing with it at home it seems to be buggin out on me. I cant get it to fire more than half a mag at once and im sure that it has a full gas charge, the only thing I can think of is that the gas is expanding and its getting lock up similar to a co2 powered paintball gun that has gotten too cold. anyone got any suggestions?!