Help me out guys. I recently sold an aftermarket Swiss K31 magazine on ebay and now the guy wants to return it because his dumba$$ actually has a model 1911 and bought the magazine thinking it would fit, even though I specified in the listing it was for a K31. I also specified in the listing that I do not accept returns. I responded, telling him that I will not accept a return and for him to sell it on ebay. I know he could sell it because I had 17 people bidding on it when it sold. He will not take no for an answer and I'm afraid he's going to open up a case on ebay and they're going to give him his money back and then seek reimbursement from me. Meaning I'll have to give the money back and I won't get my magazine back. What should I do?