Jackal, you should realize that there is a good reason seasoned gun enthusiasts are a bit, well, "paranoid" about feds prowling about. They have arrested people before on conspiracy charges related to the unlawful manufacturing of machine guns simply by observing them explaining how to convert a semi-auto to select fire to "an interested newbie". It's a bogus charge on so many levels, but that doesn't stop them from trying, and worse, succeeding. If someone here tells you how to do such a thing, they could go away for a long time, in addition to never legally owning a firearm in the USA again.
It's something taken quite seriously; I'd say the paranoia is well-founded. Responding to someone's statement with sarcasm and spite doesn't help anyone, either. The best way to learn is to watch the experienced and keep your mouth shut unless you have a question. No bickering, no flaming, no name-calling. We come together on the boards because we enjoy learning together and sharing stories and information...Well, most of us. Some might come with a badge and a gun looking for an easy arrest.