>>Now they’re declaring different levels of lethality?
Playing Devil’s Advocate here, but go find a 45 vs 9mm or M16 vs M14 thread here and you’ll find that we declare different levels of lethality too.
I carry a Glock over my old J-frame because of relative lethality. I’d take my AR15 to the civil war before I’d take my lever action because the AR is more lethal—not on a shot-by-shot basis, but on the total merits of the weapon. This is why we all choose to own AR15s!
In a close quarters setting ( like school classrooms), I would think a tactical shotgun would have the edge over a AR.
You can get the capacity to 12 rounds by using 2”, 2 1/4” or 2 1/2” shells. 12 rounds of 00 buck would clear the room without reloading.
More polite lethality? More civically responsible lethality?