Affordable Guns: Free Shipping On Certified Used Firearms Hate paying to ship the firearms you buy online? Yeah, so do we. That’s why we’re excited to announce that the affordable firearms in our It’s not a limited-time affair, we’re doing this for all our Certified Used Guns from now on. You can tell it’s certified by the marking in the corner of the image of the gun you want. But by now, you’re probably asking yourself, “Why?” Just look for the Certified marking and rest easy knowing it has free shipping. Ever wondered where used guns go to find a new home? Well, a whole lot of them end up here at Guns.com, so we get to offer used guns to you at a great price. The best of the best of these make it to our Certified Used Guns Program.