I remember someone saying "there is no way this firearm could have fired, it was a modern reproduction gun with modern safety features like half cock". So I went off and found the manual for that firearm and it explicitly mentioned things NOT to do, which included banging the gun, releasing the hammer etc. So regardless of modern safety features or not, even the manufacturer gave warnings that correspond to some of the statements Baldwin made about it just going off.

That doesn't excuse sloppy firearm safety, or the use of live rounds, or the incompetence of the armorer. But like most things, an accident is not just one thing but a chain of events.