Sellers seem to have all the advantage. Usually, the item must be paid for in full before the item is shipped. So the money is gone and the buyer has virtually no way to get it back. Neither does the buyer have any real recourse if the seller grossly misrepresented the item. The only feeble recourse the buyer has is to leave a nastygram in the feedback section. But crooked sellers simply change their screen names and keep on ripping people off.
Here's another thing that sticks in my craw. I'm, so far at least, only a buyer here on AGN. I've bought guns, scopes, mounts...lots of stuff. And after each purchase, I'm hounded by the seller to leave them positive feedback in the Feedback section. But even after leaving positive feedback for them, nary a single one of them has left positive feedback for me, the buyer, who always pays instantly and fully by PayPal. I've spent over $4000 here on AGN and not a single word of feedback, good or bad, from any of the sellers. And if I were to offer something for sale here on AGN, nobody would find a single positive word in the Feedback section attesting to my honesty and integrity, and I'd have to suffer the same doubt and suspicion as a total stranger.
To the OP, I feel your pain as a buyer. You most likely paid in full BEFORE the item was shipped. The seller got every single penny that he wanted for his gun, in advance. But you got the shaft. You're STUCK. And unless the seller, out of fear of receiving negative feedback from you, decides to make it right, YOU'RE STUCK! Sellers have all the advantage.
BeemanR7