The original firing pins are brittle, that only means don’t dry fire on an empty chamber. Pretty easy, plus, new pins are about $15.
I’ve never heard about catostophic failures, are you sure you’re not talking about firing SMG ammo in a Tokarev?
The CZ-52 was designed with roller pins in order to use any and all ammo. At least, that is my understanding.
You might want to read this: