Nothing. That is what's good by dealing w/them. They stand behind their products. And they know a lot about these! INCLUDING whoever answers phone If you decide to buy a gun w/conversion cylinder-Taylor will make sure it fits as long as you buy the gun from them. You pay a little more for Piettas than Cabela offers but the care service and quality they offer is worth it. They are our best dealer for Uberti/Pietta guns.