However, the series 80 firing pin block has its own issues. Yes it is “safer” in terms of slamfires, but it will cause failure to fire malfunctions. I have had the plunger drop down in my series 80 Colt. It has only happened once to me in tens of thousands of rounds fired, but it happened to me.
An old axiom states that anything mechanical is subject to failure. As Master Gunny put it: "Expect your weapon to malfunction."
I've seen firing pin stops fall out of position, stop on the hammer, and tie pistols up. I've seen them fall completely out onto the ground and bean the shooter with the firing pin and spring. Anything that can happen eventually will happen to somebody
We don't give much weight to what happens once or even occasionally. We look for trends rather than the rare occurrence.