You have ONE person that is responsible. Their entire job is SOLELY to ensure that every firearm is accounted for at all times. Actors should not EVERY be put in a position where they have to think about anything but their job, just as you wouldn’t expect the cinematographer to be over making burgers in craft services.

This is a false equivalence and you know it. Yes, it makes sense to put one person IN CHARGE of safety, but in a properly working system, safety is everyone’s responsibility. Making only one person responsible for it creates a single point of failure, which is how accidents happen.

Yeah, being a firearms professional is not the actor’s job. But it’s absurd to say that the only thing an actor needs to know how to do is act. If a scene requires a character ride a bike, the actor needs to know how to do that. If a scene requires a character take a golf swing, the actor needs to be able to do that. They don’t need to do so at a professional level, but they need to be able to do so enough to make it work for the camera, and more importantly, not hurt anyone.

The correct process is not difficult. When the firearm is handed off from the armorer to the actor, the armorer proves it’s clear. Every time. The actor doesn’t need to know how to clear a weapon, they just need to know that the armorer needs to clear it for them. If two people (the armor and the actor) are responsible for making sure its cleared every time it gets handed off, then it’s harder for that step to get forgotten.