As you can see, Californian here, designing my first build with many questions. I've been looking at some barrels, getting an idea of what would be best for me. I see references to "threaded" barrels in some places, and how they won't ship to this state. Are they talking about threaded for flash hiders and comps, or threaded for suppressors? I was always under the impression the former was outside the barrel, while the latter was internally threaded, hence my confusion. Which one can I get and be legal, or will neither of them be available to me?