Could be many things but that sounds like the motor is sitting too low or too high.
Try using a small allen key on the screw on the bottom of your handle.
Very common problem with mp5s. If it connects, the gun should start cycling right away. From there, adjust the screw up or down until it is firing at its quietest.
If it's not a motor adjustment problem then you have something stripped inside.
Who did you buy it from?
__________________
(Former)Grand Poobah of T.W.A.T.
|