Kinda what I've been trying to do the last year or so trying to collect books and whatnot on the subjects. Would like to at least be able to some day build/assemble my own bolt gun. Done a couple ARs. I can switch parts out easy enough on about everything we own and shoot and like you said, to be able to support ourselves would be a goal. There's not a gunsmith that I know of within several hours drive from me. To work/apprentice under a good one would be priceless!