How would we know it if CZ changed firing pin retaining pin design, specs. or suppliers?
We do know, from member posts here that sometimes the FPRP in their guns look well used/damaged when the pistol comes right out of the box. Others report thousands of rounds with very little signs of use/damage. Is it the FPRP? The firing pin? What else?
I brought this up as there's a discussion on the M&P forum about extractor pins. Due to the statements made about different members pistols I got some of mine out and looked. Some of my M&Ps have solid extractor pins and some have roll pins. S&W doesn't announce when they make changes or why they make changes.
Wobbly mentioned, the other day, that there are times when an ammo maker will use a different powder in their loads when it's harder or more expensive to get the usual powder. I wouldn't be surprised if some of the more standard parts (pins/springs) are also variable as the years go by and our CZ pistols are made. Remember the trigger return spring breakage issues several years ago.
Our choices are shoot it (live or dry fire) till it breaks and then replace it with the pin of our choice. Or every so many thousand rounds remove it and replace it with the pin of our choice.