If you want to powder coat your gun barrel, there are a few things you need to do first. First, you need to clean the barrel thoroughly. You can do this by disassembling the gun and cleaning it with solvent and a brush. Once the barrel is clean, you need to sand it down so that the powder coating will adhere properly. You can use fine-grit sandpaper for this.
Once the barrel is sanded, you need to apply the powder coating. You can do this using a special gun that applies powder coating material, or by using a spray that can fill with a powder coating material. If you’re using a spray can make sure to hold it about eight inches from the surface of the barrel and move it in a steady, even motion.
Once the powder coating is applied, you need to bake it so that it will be set. You can do this in an oven set to 400 degrees Fahrenheit. Once the powder coating is baked, it will be hard and durable. Your gun barrel will now be protected from the elements and will look great. Thanks for your question!