It was not allowed until after (but not necessarily as a result of) the lawsuits. CA gun stores first started getting shut down in March. On April 10th, the ATF

It was not allowed until after (but not necessarily as a result of) the lawsuits. CA gun stores first started getting shut down in March. On April 10th, the ATF issued guidance saying that it was OK to do curbside pickup (for the whole country, not just CA: https://www.atf.gov/firearms/docs/open-letter/atf-business-premises-guidance-letter-4-10-2020/download https://www.atf.gov/firearms/docs/open-letter/atf-business-p...)