If you had to DIY gunsmithing, which line would you choose?

[Barbary]

I have been considering getting training to maintain my own guns. I really like my M&P pistols, but from what I understand the gun smithing class is not for civilians. If the classes aren't open for the average joe, is there any way to get trained? This also leads me to wonder if S&W would be willing to sell parts. The two products I know of that allow for this and ease of getting parts would be SIG or Glock. Input is welcome.

[DefensiveCarry.com]

[HotGuns]

The world opens up for you if you get an FFL, this will allow you to get into most any class that is offered.
Most of the major manufacturers require it, its a cover their tail thing, as they dont want just anyone messing with the guns that they sell. Get the FFL, attend the class, become a certified amourer, and you'll get dealer pricing along with parts available to you. The dealer pricing alone would make it worth your while.