The last few times I have been shooting my gsg 5 I will randomly get a three or two round burst out of one trigger pull. I am almost curtain that I am not bump firing the gun because I can pull it once and let go of the trigger and it does it or I can pull and hold the trigger down and it does it. It seems to happen once every 100 rounds or so in typically a three round burst, as fast as a full auto gun. Anyone know enough about these guns to have an idea of that is wrong? should I send it back to ATI? cuz its a pretty cool problem other than I dont want something serious to happen.