Someone else may know more about this than me, but, From what I have read, CZ got a bad batch of trigger springs and not all of them break. if they do, they seem to break between 400 and 500 rounds. I actually called CGW about a trigger job & upgrade on my PCR because of the bad spring deal. I wont EDC anything until after 3 or 400 rounds of flawless performance. They told me it was foolish to do anything if it had not broke yet. I was only about 200 rounds into it when I called. They advised me to go ahead and run it over 500, and if it didn't break by then, it probably was a good spring, and I'd be good to go. I ran it to 700 rounds before I started using it for EDC. Close to a 1000 now, and its never had a hick-up yet.
I did smear some carbon fiber grease into the trigger mech, and it did help smooth it out. I think its fine like it is now.
And I actually used my Beretta 92 sight pusher with a c clamp on the PCR. The rails are close enough it worked. But I removed the rear sight, then re installed it and bumped it to the right a tic. It was canted a tic left of center new and was shooting left. I like the factory sights and can hold really tight groups. So I figure if it aint broke, don't fix it. Brownells had a universal sight pusher for about a $100 last I looked. But all my auto's are CZ or Beretta, so the one I got will work on both it seems.
My PCR has a 2013 slide date, Im not sure with exactly what build dates the spring issue started or ended. I kinda decided the gun was good enough since it shoots so well and is so accurate, that instead of sending it to CGW, it can stay as is, and I'll apply the $300 to a new 75BD.
Good luck.
