These are some 2A Researchers and Activists

State-Level Estimates of Household Firearm Ownership
https://www.rand.org/pubs/tools/TL354.html

• 1980 and 2016
• measure of household firearm ownership
• survey-based estimates on:
  – firearm suicides, hunting licenses
  – subscriptions to Guns & Ammo magazine
  – background checks
  – to represent the proportion of adult households with a firearm for each state in each

Pew Research Center
https://www.pewresearch.org/social-trends/2017/06/22/americas-complex-relationship-with-guns/

•  March 13 to 27 & April 4 to 18, 2017
• 3,930 U.S. adults
• 1,269 gun owners

Small Arms Survey
http://www.smallarmssurvey.org/fileadmin/docs/T-Briefing-Papers/SAS-BP-Civilian-Firearms-Numbers.pdf

• 2018
• Sept 2011

• 2017 = 857 million civilian-held firearms in the world’s 230 countries and territories
• 100 million civilian firearms were reported as registered, accounting for some 12 per cent of the global total
• 120.5 firearms for every 100 residents in the United States
• SAS-BP-Civilian-Firearms-Numbers.pdf