This sentence is biased, intentionally or not, to the point of being very misleading. It's perfectly legal to make guns for your own use, assuming you're not a prohibited possessor such as a felon, and as long as the guns aren't NFA items. Even BATFE freely admits this. So what's with this "legally or not" crap?
‘So what’s with this “legally or not” crap?’
You’re comments are based on the Law as established by the Federal Government of the United States. That’s not the only government that establishes law.