We pay Top Dollar for your guns an gun collections. We pay cash. OnMark USA buys and sells all types of guns, gun accessories and memorabilia. As a service provider to gun collectors, firearm enthusiasts and historic memorabilia collectors, we're always excited to talk with people about their interest and needs in the gun world. We buy and sell guns throughout the country, traveling to guns shows, firearm auctions, exchanging emails and photos or talking on the phone, we're always available to you.