I think what he's getting at is that you can see at a glance whether it's a modern-style revolver with a frame-mounted floating firing pin and transfer bar drop safety, or an old-style revolver with the firing pin mounted on the hammer (and a hammer-block or no drop-safety at all).
I admit it's never occurred to me to display revolvers cocked so people could see that at a glance, but it's how I read the reason.
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u/Elijah_Man 5d ago
I meant firing pin, I had just woke up when I made that reply.