S. Dakota has recently began a program under the state's economic development. It's called an "internship" where a person can come work for a shop. The state and the business split the wage with the end ambition being that the student will either mature into a full time employee or run off to fullfill their own business cravings.
I spoke yesterday with the head of the program from Sioux Falls.
There are no formal schools here in SD but it has become a major "ground zero" for the firearms industry. Personally I think the schools need to make some significant curriculum changes as the trade is still be taught with a "1960's" technology base. It's historically been a cottage industry but times are changing.
Software, computer controlled equipment, and the knowledge to use it are a must to survive/thrive in the future.
Last: Entering this trade as a hobby can result in a slow and painful death unless you enjoy a reasonable disposable income and a 40 hour work week with no wife/kid(s). The equipment requirements alone can drive a person to a padded room. Nevermind what the misses and little Jonnie are going to do when Daddy is too busy to go camping, etc. . . Just saying.
Just don't go the AGI route. It will be a total waste of money as it will not give you near enough knowledge or experience.
Their tapes are good if you want to learn about a spicific weapon.
Even if you go the full time school route, you will need to work with a good gunsmith for a while and have thousands of dollars saved for equipment and to live on until your busines gets going.
If you make 40K a year after expenses, you will be doing good. You still won't have any benifits. If you have priced them lately, you will need an extra $1200. an month and that's if you are younger and in good health.
..If you decide to become a Gunsmith, be sure that you have a second income to support the shop until it's making enough money and have a lot of drive and family support, you'll need it.
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Best Regards, John K