Oh man, the anti-rights people will scream over this one, too

The U.S. Court of Appeals for the 9th Circuit decision Monday in Teixeira v. County of Alameda vindicates the Second Amendment rights of gun stores and provides a good model of the Second Amendment doctrines that have been developed by the federal Circuit Courts of Appeals. Eugene Volokh’s post has summarized the decision, so I will delve into the doctrinal details.

And this, from down in the piece, is the part that'll really cause them heartburn:
The historical analysis showed that commerce in firearms was universally understood to be part of the right to arms.
That is a BIG whack at some of their 'arguments'.

Ah, their tears are sweet, are they not?