How expansive the Second Amendment is since the decision of the United States Supreme Court in Heller is likely to be debated for a significant period of time.  One notable recent decision is from Oregon where the court dealt with what right does an individual have to carry loaded firearms in a public place.  State v. Christian (Ore. Aug. 15, 2013):

[W]e conclude in the first instance that the ordinance [limited carrying] does, to some extent, burden protected conduct falling within the scope of the Second Amendment’s guarantee. [Footnote: … Although Heller did not define the scope of the right to self-defense outside the home, we read the opinion as recognizing a right to self-defense outside the home to a degree yet to be determined by the Court….]

The Oregon Court concluded that the ordinance in Christian did not restrict the right to bear arms too much, partly because Oregon is a shall-issue state and people remain free to carry if they get a concealed carry license.