Find your local “gun trader”: Following up on step #1, how in the heck do you quickly sell a gun? Selling to a gun store or on consignment will give you at least a 20% loss. Selling privately in a face-to-face transaction is best. Do a quick Google search of gun trader and gun exchanges in your state. For instance, Virginia has – a forum for people to buy and sell firearms to other Virginians without having to hassle with all of the paperwork. Legal, fast and friendly.