Many of the finest guns in the world are blued using this process and it is mandatory for soft soldered double guns. A professionally done finish using these methods will fetch $300 and more! In the past this information has been limited to a handful of gunsmiths. In three hours Gene Shuey reveals step by step these little-known processes. Don't miss out on offering this profitable service to your clients. The Professional Bluing Course previously mentioned is a prerequisite and should be viewed prior to this course to fully understand the metal preparation process.