I'll disagree with Supermoto. I probably know more about his guns / gunsmith experiences than most.
If you haven't shot it yet, sell it as NIB, and learn from this!
Some things to ponder.
If you want a game gun, get it from someone that plays the game.
Don't rush into buying something, do a bit of research, more than a few questions on internet forums. Ask follow up questions. Other people have made the same mistakes, learn from them! Better yet ask people in person at matches.
If you want to shoot a specific division in a specific organization, concentrate your questions with people that shoot that division and organization.
A good used gun can be a good deal. Avoid sales that don't allow a reasonable inspection time.
High post counts on internet forums don't always translate to actual knowledge.
Oh yeah, if someone asks you "Why?" there maybe some underlying reason that you should explore beyond your first answer and what is obvious reasoning.