P-07 Extractor Spring Pin Question

[Vinny]

My UG P-07 SR extractor fell out today, I recovered the extractor, the extractor pin had slid up but was still there, but I lost the little spring. 

However, I found an extra part which looks like it might be a retaining pin for the extractor spring; but CZ's parts list and diagram doesn't show it?? And my extractor has an extra hole right above where the spring goes that also doesn't show on CZ's parts diagram.

It's silver, has a flat machined head that looks like it seats in a bore in the slide below the spring, and my extractor has a little hole that lines up above the spring. My P-07 is a 2017.

Can anyone confirm that this silver pin belongs there??


Geeze, good thing I found it.
I was bragging the other day how my P-07's had not had a failure of any kind whatsoever in thousands of rounds. Guess I shoulda kept my mouth shut!    lol

Thanks, Vinny

[SI VIS PACEM PARRABELLUM]

That silver stud is a loaded chamber indicator. Goes in the slide first then the spring on top of that. Your P-07 had a failure but it's obvious it was not the guns fault. Clearly when the slide was milled for that optic sight the extractor retaining pin bore was shortened as was the pin so the best thing to do now is get a new spring and size a new retaining pin as well. I'd add some loctite too just to be sure it stays in place.

[Vinny]

That silver stud is a loaded chamber indicator. Goes in the slide first then the spring on top of that. Your P-07 had a failure but it's obvious it was not the guns fault. Clearly when the slide was milled for that optic sight the extractor retaining pin bore was shortened as was the pin so the best thing to do now is get a new spring and size a new retaining pin as well. I'd add some loctite too just to be sure it stays in place.

Thanks, That's exactly the info I needed.
I'm surprised the CZ Parts list hasn't been updated to show it? And they have no separate part available unless it comes with the spring??
So, I ordered a spring and another retaining pin, but maybe it needs to be one size larger or peened to lock it plus loctite.

You're absolutely correct too about the cause of the retaining pin drifting out.
If the optic mounting plate was a tad longer, it would cover the retaining pin and block it from drifting. I'll check with CZCustom to see if there's been any design changes since this was milled at least a year ago. 

Thanks Again,  Vinny

[Vinny]

P.S. - All this time and I never knew that dinky thing was a 'loaded chamber indicator'. Thank You California for saving me from myself.

I guess I'm just old school. I know when I put bullets in the chamber; and If I'm not 100% sure I do a press check.

Never did like those idiot lights to tell me it was time to add oil. 

[M1A4ME]

Sorry, but that would bother me.

That??  The top of the slide being machined to allow the optic to be installed lower created a condition that led to your loss of the extractor pin/spring and the pistol being "down" till you get replacement parts.

Those pins are installed from the bottom.  They can't come out from the top in an unmodified slide.  You can insert the correct sized punch in the hole on top of the slide to drive the pin downward far enough to remove the extractor/spring/loaded chamber indicator, but the pin won't move upwards on it's own.  I suppose, if you were to turn the slide upside down and beat on the punch long/hard enough you might be able to drive the pin out the top, but it would take some effort (if you didn't destroy the pin first or lock it up in the hole from peening the end up).

If the slide is going to be machined to that size for an optic installation the adaptor plates should be as long as the milled slot.  Even if the optic is shorter that the slot.

You could peen the top of the hole so it's diameter is smaller but it will leave an "ugly" where it's visible due to the short adaptor plate.

I don't drive those pins all the way out.  Just far enough downwards to release the extractor.  That way I don't loose them and they are already "started" in the hole for installation of the new extractor or spring.

Good luck with it.

Anyway, it's a learning opportunity.

[Vinny]

Sorry, but that would bother me.

That??  The top of the slide being machined to allow the optic to be installed lower created a condition that led to your loss of the extractor pin/spring and the pistol being "down" till you get replacement parts.

Those pins are installed from the bottom.  They can't come out from the top in an unmodified slide.  You can insert the correct sized punch in the hole on top of the slide to drive the pin downward far enough to remove the extractor/spring/loaded chamber indicator, but the pin won't move upwards on it's own.  I suppose, if you were to turn the slide upside down and beat on the punch long/hard enough you might be able to drive the pin out the top, but it would take some effort (if you didn't destroy the pin first or lock it up in the hole from peening the end up).

If the slide is going to be machined to that size for an optic installation the adaptor plates should be as long as the milled slot.  Even if the optic is shorter that the slot.

You could peen the top of the hole so it's diameter is smaller but it will leave an "ugly" where it's visible due to the short adaptor plate.

I don't drive those pins all the way out.  Just far enough downwards to release the extractor.  That way I don't loose them and they are already "started" in the hole for installation of the new extractor or spring.

Good luck with it.

Anyway, it's a learning opportunity.

Thanks, All good info. 
Never had to R&R an extractor so it IS a learning experience.

There's no question that the retaining pin drifted upwards enough (because it was milled) to allow the extractor etal to escape. I could pull the pin out from the top but left it in place till I knew what I was doing.

My plan is to contact CZ Custom who did the milling and ask their suggestions. If I recall correctly, their 'new' multi-optic cut has full-length plates. Maybe getting an updated plate is the correct solution. But I won't know till I ask.

Thanks Again for the suggestions.  This Forum is a wealth of good info. -Vinny