Where's the Best Place to Sell all my Air Gun Stuff?

I own over $6,000+ in air guns, accessories, and ammo, am getting out of this hobby. Am wanting to sell all of it and looking to let it go for a good deal. Would prefer local pickup as it includes a very heavy compressor. Where would be the best place to list my items for sale that's allowed? Location is in Knoxville, TN area.