I have heard talk about these “rules” but have yet to see a link to a full copy. Anyone?
You might look at this.
https://www.latimes.com/entertainment-arts/business/story/2022-10-11/rules-governing-guns-on-film-and-tv-sets-are-being-revised-in-the-wake-of-the-rust-shooting
And this:
https://www.csatf.org/production-affairs-safety/safety-bulletins/