Many people are concerned about whether or not their guns will rust if they're stored in a gun safe. After all, gun safes can be quite humid, and guns are often made of metal. The good news is that most gun safes are actually designed to prevent rusting. The inside of a gun safe is usually lined with a material that absorbs moisture, such as felt or foam. This helps to keep the air inside the gun safe dry, which in turn helps to prevent rusting. Of course, there are always exceptions. If you live in an area with high humidity, or if your gun safe isn't properly ventilated, then there's a chance that your guns could rust over time. However, as long as you take proper care of your gun safe, and of your guns, they should be just fine.