Most states show that air guns are legal..some do require an adult present with children of given ages. This website I did find shows the information per state. https://huntingnook.com/air-gun-laws-by-state/
This site also had some interesting information. Sheriff’s interested in starting up interest in a voluntary posse could make this site for search and reading. It would be required by the volunteers to own these items. Sheriff’s with a posse could offer even a class on safety and could maybe have a volunteer with some land that could provide a meeting place for the group.