Hey, another great source you should look into is the American Gunsmithing Institute, AGI, they are on the web. I have taken several of their courses and find them to be both above average in course content and it can be done in the privacy of your own home at your own pace. Their personal support is beyond approach. You can log onto their website and ask gunsmithing questions and receive direct feedback pronto. Presently i'm working on my National Certification as a Law Enforcement Armour and next i will take their Enhanced Master Gunsmith course. Look them up on the web and i know that you will greatly be satisfied.