I often use shoe polish on my forged work if it is going inside. All the shoe polish colours work well, if your gun bluing is bad it could help smarten that up if you used black polish. I use a home made version of Rennaissance wax which is a microcrystalline/polythene wax blend for clear finishing, it has quite a high melting point so central heating or strong sun does not make it sticky like the bees wax based finishes.