whenever i’m in a gun shop the clerk always clears the firearm before letting me get my grubby hands all over it ;-) should they fail to to this simple thing, then i either won’t accept the gun, or i’ll clear it meself.
I don’t ever dry fire ANY weapon, even one of my own, in my own home, even if I’ve just cleaned it, without checking it at least twice.
There are just ways that certain things go wrong...and pulling the trigger on an “empty” firearm is one of them.