LOL...this guy obviously didn't pay attention to what a couple of Eastern Europeans with pistols did to the entire Boston police force. Imagine a squad-sized element with ARs and actually motivated to take the fight to the cops?
When I worked in the 1980’s as civilian state security at an Air Guard base we either carried Air Force M-16s (120 rounds) or S&W Model 15 K frame .38s (18 rounds) depending on our assignment. The police in that state capitol city walked mighty small around us, as I remember it. They had pistols and maybe a shotgun in their patrol cars.
And pressure cookers. Don’t forget the assault cookware.