Hi, I have a G&P M16A3 it's new just out of the box and I have only put about 400 BB through...

it. The batteries are charged, the fuse is good, the motor is fine.When I try to fire on either semi or auto the trigger clicks and nothing happens, no sound from motor or gears nothing just the trigger making a click when i pull it back to a certain point. What could be wrong and would it be an easy fix?

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