From The Federalist:

Under the Heller test, this record establishes the unconstitutionality of the ban on assault weapons, Benitez concluded. However, being bound by Ninth Circuit precedent, Benitez continued to consider the constitutionality of California’s law under that appellate court’s two-prong test. In his analysis, Benitez bypassed the strict scrutiny standard, noting in passing the law would fail that test as well, to apply the “intermediate scrutiny standard” created by the Ninth Circuit.