I think the article and this Brookings article (which has some graphs) [0] are talking about the same data. It's based on the number of background checks by NIC

I think the article and this Brookings article (which has some graphs) [0] are talking about the same data. It's based on the number of background checks by NICS [1]. Out of the top ten highest weeks for background checks, nine were in 2020/2021, the other was in 2012 [2]. A month after Obama was reelected? Not sure what else was going on in December 2012. [0] https://www.brookings.edu/blog/up-front/2020/07/13/three-million-more-guns-the-spring-2020-spike-in-firearm-sales/ https://www.brookings.edu/blog/up-front/2020/07/13/three-mil... [1] https://www.fbi.gov/services/cjis/nics https://www.fbi.gov/services/cjis/nics [2] https://www.fbi.gov/file-repository/nics_firearm_checks_top_10_highest_days_weeks.pdf/view https://www.fbi.gov/file-repository/nics_firearm_checks_top_...