Author Topic: Is the P-10 C firing pin block/safety a flawed design? (UPDATED)  (Read 1160 times)

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Offline seebee62

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I bought my P10C FDE in January 2019. Has a test fire date of 8-2018. Function has been 100%.

I was interested in it since it first came out but  when my LGS had them I didn’t have the money when I had the money my LGS didn’t have them.
But they got a bunch of FDE’s in January so I traded in my Glock 19 (which gave me a bad case of Glock knuckle. )

To my knowledge there haven’t been any drop firings concerning the P10 C or the striker releasing on its own.

After a range session with it and after cleaning I check the striker to see if it’s not broken. I check all my carry guns after firing them. 



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Hickeroar

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Got ahold of CZ on the phone. The guy I talked to said "that won't happen when the pistol is in battery, because the spring on the firing pin block would keep the block in place"...except that doesn't actually seem to be happening.

I guess I'll take his word for it, but his explanation didn't sound convincing.
« Last Edit: April 10, 2019, 01:45:34 PM by Hickeroar »

Hickeroar

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UPDATE:
Leaving the full story for "future reference's" sake in case someone else has this concern down the road.

I called CZ back because I wasn't convinced by the first explanation I got. He had made it sound like the SPRING was supposed to be holding the block shut. Of course maybe the communication error was on my end. Dunno. :P

He explained to me that the triangular nub plays two different roles depending on the position & movement of the trigger/trigger-bar/disconnector.

For the record, here's the breakdown:
  • When the trigger is in the forward/active position, the trigger connector is in physical contact with the striker connector at all times, and holds it rearward, effectively playing the "firing pin block" role while the firearm is in that state. It's actually true that in this state, the block is not "secure," but it doesn't matter because the trigger connector/bar itself is doing its job.
  • When the trigger is being pulled, the movement of the trigger bar rearward at its "raised" level uses the SIDE of that triangular nub to disengage the safety and pull it sideways (rightward if you're looking down the length of the pistol from behind).
  • When the trigger reaches the rearward position, the connector drops downward (causing the striker to release) (you can see this when pulling the trigger forward and rearward when the slide is off). It's SLIGHTLY raised after firing, which allows the striker to re-engage against the trigger connector and pull it a little rearward when it cycles forward (this pressure also enables the trigger's reset when released after the slide cycles).
  • SO, as for the triangular nub's OTHER role: when the trigger connector/bar is in the lowered/down/rearward position and the slide moves back forward, that triangular piece is now moved down & rearward and into the proper position for the TOP of it to forcibly hold the striker safety/block in the "closed" position, leftward. So the SIDE of it disengages the safety when pulling the trigger, and the TOP of it then holds it closed in the rearward position, after the slide has cycled.
  • So...it's actually an elegant, if unusual design, and I was wrong to be worried. The spring on the block/safety is only really used to move it back into place to allow the triangular nub to do its job when the slide moves back forward.
« Last Edit: April 10, 2019, 02:15:22 PM by Hickeroar »

Offline apeaks24

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Appreciate that. CZ has been around the block and I trust their team.


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Hickeroar

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Appreciate that. CZ has been around the block and I trust their team.


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Ya I think carrying this sucker appendix, it wasn't enough for me to know that it "probably" was fine and I needed to know how and why it was fine. :P

Offline apeaks24

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Totally agree as I carry appendix as well


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Offline dwhitehorne

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Thanks for taking the time to write that explanation. Very interesting but different set up. David

Offline armoredman

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Re: Is the P-10 C firing pin block/safety a flawed design? (UPDATED)
« Reply #22 on: April 11, 2019, 02:06:01 AM »
Thank you for the detailed follow up, good description.  8)

Offline Joe L

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Re: Is the P-10 C firing pin block/safety a flawed design? (UPDATED)
« Reply #23 on: April 14, 2019, 06:00:52 PM »
You are a good man Hickeroar, for following up on your concerns.  I was pretty sure there wasn't a problem, but I had not taken the time to try to explain it.  In my case, just blind faith that CZ had done it right.  Your way is better. 

Joe
CZ-75B 9mm and Kadet, 97B"E", two P-09's, P-07, P-10C, P-10F

 

anything