I'm not sure if you know the story about Brandon Lee in the Crow - but guess what: The Crow was a high budget movie. And Brandon Lee died because
the propmaster didn't take the right precautions. There were trained people on set earlier in the day. You admitted yourself you have 0 knowledge about guns. This is a guy who should've known. But he was inexperienced, the armourer had gone home for the day. You're a guy who doesn't know. You wanted to be your own armourer. That doesn't save you from being responsible for someone's death or injury and it also means you're
more likely to have accidents, not less.
Not only that, but did you notify the authorities you were filming with a gun, as is standard protocol? They would've asked who your armourer was and would've put a stop to you filming with a live gun without one. Even if the gun
was unloaded.
To add, have you not just pointed out that he said the only way the gun is safe is to strip it? And that he wouldn't feel comfortable even if it were unloaded?
There was a worker killed on the set of the upcoming Spiderman movie. These are high budget, studio features that should have or would have taken precautions. They have
trained safety professionals on set whose job it is to pick out dangerous and unsafe activity and either put a stop to it or consult about a better, safe way to achieve the same thing. Yet, still accidents happen. Do you think your untrained self is immune to all accidents simply because you
think you know something? I'm not saying whether or not it is safe because I don't know. I don't know guns. But I do know that Brandon Lee was killed on a set where they thought they had taken all the precautions necessary. That's why I certainly wouldn't be a part of a film set where there is a live gun being used by inexperienced people, especially against the cautions of the person who owned the gun and (presumably) the only person on set with any experience with guns..
I'm sure it is a long story, but at the end of the day all productions have 'long stories'. Hell, a 3-day short film I shot early last year has a 'long-story' about things going wrong and causing stress on and off set. Does that mean our Director went screw this you can do it yourselves? I'm ACing for a low-budget feature that's had an insurmountable amount of issues from cast and crew pulling out (with 4 days til shooting) to issues with equipment and hire. I'm sure it frustrated the Director. I'm sure he's had issues. But he kept plugging away at it. Because he wants to see his vision come to life. Sure, we all do this for the fun of it and some of us are lucky enough to make a living out of it but at the end of the day it's hard work even if it is fun. You can talk about how people don't know what it's like and that's cool. But that doesn't mean it was necessarily anyones fault, and if the truth be told, even if it something wasn't actually your fault, the fact that you're the Director means the fault lies with you. So it's your job to fix it. In my opinion, I don't think you should quit just because you've had problems, especially if you could've potentially fixed those problems in the first place. Though, in my opinion you shouldn't want to risk an actor's life with a live gun after you've already been cautioned that it could cause injury to them. But that's just me.
Edit: to add a quote from an armourer I've worked with before:
Firearm Licences are specific to the person named on the license and are issued for a specific purpose - No other type of firearm licence holder can hand a firearm ( loaded or otherwise ) ( working or not working ) to an unlicensed person and as most actors would not be licensed for that type of firearm, an additional offence would be committed (and as it would be recorded on film, would be evidence for a prosecution). Only a Licensed Film Armourer can hand a firearm to an unlicensed person
So there's the legal standpoint, regardless of the safety.
I don't mean to patronise, I just feel that this information should be here for anyone who reads this in the future and thinks it might be okay to use a real gun in a scene without all the proper safety precautions.