Tell him you'd gladly offer him a full refund for return of the gun. It's basically the "not as advertised" clause. If it's not as advertised the buyer can return the item for a refund. He cannot demand you send money back for parts he bought on his own.
I'd also call paypal and explain the situation immediately. He CANNOT file a dispute then start selling the items under dispute.
Note: While I would love to take credit for his work, I am not associated with Mad Customs!
Originally Posted by senghing27
You can contact BigMatt-MadCustoms in his MCB forum