EMG KSG Gas Shotgun

Bought new, skirmished once. Now it won't fire so selling as boneyard. 50% of the time after pumping the trigger does nothing. Either the sear doesn't catch the striker or the trigger won't interact with the sear at all. I'm no tech and really have no interest in trying to fix it so need this gone! Will include original box and extra shells. Postage available at expense.