"I am an actual "user". I was an actual owner of a (newly purchased) Taurus PT-99. My locking block did fail, and it failed in less than 1000 rounds. I've already detailed the rest of what happened.
So, either you think I'm just some liar and my postings on this topic is more "unreliable internet stuff", or I guess that what happened to me was a 1 in 10,000 fluke?"
I've fired around 3,000 rounds without issue on my PT99 that I bought used, so not sure how many total rounds on the original firing block. Combining my experience along with all the great reviews I read on this gun, I would most certainly conclude you are the exception and got a bad one, every manufacturer of pretty much every thing has those.
Btw, it's obvious looking at the locking block in my gun that it has been worked, that it's not some universal part that all are the same and fit all guns - how is it your gunsmith didn't understand that? you think a light bulb would have gone off in his head after the second rough one arrived, but he was still clueless after the third? I also question his gorilla approach to dismantling the gun, later to learn the barrel should have been cut out - why did he act first and ask questions later? seems to me your gunsmith's intelligence/experience had as much to do with your current resentment as your PT99.