I didn’t read the whole Breitbart article, but I’m pretty sure they were talking about this:
Where she is talking of assault style rifles. Not all firearms.
She has stated on other occasions her desire to ban guns. There’s another quote of hers where she simply says “guns” and doesn’t specify a particular type of gun. So even if in this particular clip she claims she was only talking about assault weapons, I think her true intent is pretty clear.
Besides, she is just one politician, there are numerous others calling for all sorts of unconstitutional gun bans, and there are leftists who claim that the Second Amendment is no longer needed or that it doesn’t apply to regular people. And as I said before, of course most gungrabber politicians are careful about what they say in regard to the Second Amendment, because they know that the majority of the public disagrees with them, and they know they would look like the anti-American authoritarians they truly are.