Is there a way I could mess up. This would be my first attempt at gun smithing. I've been a carpenter by trade for over 20 years so I'm used to working with tools, but I'm a woodworker. I'm not asking how to do it but is there a way I could really mess up.
You would have no problem swapping a barrel. Invest $12 in becoming a member. That will give you access to all of the tech articles and they will show you how easy it is.

Even if you decide not to swap the barrel yourself (but, you will) all of the articles are still worth way more than $12. They unfortunate part of being a member is that it gives your acces to the Classified section. This has cost members hundreds or even thousands of dollars in new acquistitions.

Welcome to the Darkside.