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CZ75 Broken Slide Stop


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I have a CZ75B and a CZ85C (just another 75 variant), and the slide stop has broken in both of them multiple times.  I've replaced the recoil springs in both guns, thinking if that spring was weak it'd increase the beating this slide stop was taking, but even with a spring that's around 1,000 rounds old, I broke another slide stop today.  Is this a common problem?  Does anyone know of an aftermarket version that's made of higher quality than CZs?  I'm not sure what to do other than to keep a handful of extras around, but that doesn't do anything as far as confidence in these guns for every day carry.

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LOTS of shooting CZ 75 models in competition and training classes over the past three years with four different pistols (2 Shadows, one non-Shadow, and a Compact).  Numerous slide lock magazine changes (IDPA competition).  Factory ammo and reloads.  In all that time, I have had a few fiber optic rods come out of the front sight and have broken one (1) trigger return spring.  No other problems.  I am not aware of any of my fellow competitors that shoot CZ pistols  experiencing a broken slide stop (though they may have, and I am just not aware of it).

Edited by 45 Raven
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1 hour ago, Overscore said:

I have a CZ75B and a CZ85C (just another 75 variant), and the slide stop has broken in both of them multiple times.  I've replaced the recoil springs in both guns, thinking if that spring was weak it'd increase the beating this slide stop was taking, but even with a spring that's around 1,000 rounds old, I broke another slide stop today.  Is this a common problem?  Does anyone know of an aftermarket version that's made of higher quality than CZs?  I'm not sure what to do other than to keep a handful of extras around, but that doesn't do anything as far as confidence in these guns for every day carry.

Slide stop and trigger return spring both are fairly common failures.

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12 hours ago, bigdave24 said:

Something doesn’t seem right if you’re breaking that many.  But as far as your carry pistol, just keep a new unused slidestop in it.  Change it out when you shoot it at the range.

 

I appreciate that suggestion, but now I've lost confidence in CZ and this junky, yet very critical, part.

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Back in the last millenium, when everyone was shooting EAA/P9/tanfoglio in 9x21 those things would bend and break slide stops all the time.

It will also crack the frame through the slide stop hole area.  Are you shooting hot ammo?

EGW sells tool-steel slide stop pins.

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Got a few CZs.  Haven't broken one yet.

 

I hear guys on the CZ Forum that get 8 or 10,000 rounds on a pistol and break a slide stop.  Some guys get upwards of 30,000 rounds on one before it breaks and some guys get that many rounds through their CZ with the original slide stop.  I bought some extras, just in case.  They're in the parts cases with the other CZ spare parts.

 

Have you called CZ USA about it?  They might be able to help you out.  I wouldn't be quick to accept an excuse that it's a known issue.  Be sure to tell them how often your pistol is breaking them and how many rounds you get between breaks.

 

If you run light recoil and hammer springs you probably should run heavy/hot loads in it.  If you're running powder puff loads then the lighter springs shouldn't put extra stress on the pistol.

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What year are the pistols, what ammo are you shooting, what recoil spring are you running? It happens to some folks and not to others, the more info the better.

 

The 85's could be more prone to breaking slide stops due to their design but i have not accumulated enough info to substantiate this.

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CZ Custom told me, one time, that the reason for the change in the CZ85 slide stops (new version has a thicker wall on the right side slide release lever) was the original/Pre B pistols would break/crack in the wall area on that right side.

 

Mine never has.  It was pretty ragged when I got it and had been used hard and not taken very good care of.  I wanted to buy new ones for the Pre B but left the old ones in it and had everything refinished.

 

 

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57 minutes ago, perttime said:

Lots of people keep two slide stops for a CZ: old one for practice and new one for matches. Break one after 1000 rounds? That is unusual. There's something wrong somewhere.

 

Agreed.  Mine usually last at least 10k rounds.  I have one held aside for major matches. 

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Like pyrrhic3gun, I remember the Old Days of 9x21 Major CZ and TZ.

Slide stop breakage was routine.  I saw one guy replacing his with a straight pin, no lever.  He had a baggie of them in his range bag. 

An early Internet Expert said that breakage was not right if the gun were "properly fitted." 

I think the OP would do well to consult a CZ specialist shop and see if they could straighten his guns out.

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CZ Customs sells a spare parts kit for CZ Shadows and it contains not one but 6 slide stops, so that tells ya they are fairly common to failure. But every thousand rounds seems excessive. 
Hot loads? 

Edited by Malarky112
Stupid autocorrect
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I’ve never broken one yet and have 10’s of thousands of rounds on some of my CZs. Something that hasn’t been mentioned or questioned is lube on the pin. I personally don’t think oil is the best lube for the pin and the barrel’s peanut slot because oil doesn’t have a high enough film strength. The important property of film strength is its ability to keep two surfaces separated from contact and theoretically if there is never any contact then there won’t be any wear.

 

 I use grease on both the pin and slot. Not any grease but more specifically Amsoil polymeric grease. Just search YouTube for “Amsoil grease pound out test”. Amsoil grease has the ability to stay in place and resist pound out forces better than many other greases.  I am not affiliated with Amsoil but I am a fan of their grease.

 

Here is a link to a test:


 

Here is another impressive grease but I’ve never used it ... yet.

 

 

Edited by igolfat8
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  • 9 months later...

I am using a grease for food processing machines SFL-1. I have yet to break a slide stop. Maybe it doesn’t matter as much which grease and it is more about using grease?  I have 2 sp01 shadows and about 25000 9mm rounds between them.  I still use a marked slide stop especially for bigger matches just to be sure. Additionally to the 25k 9mm Nato rounds I also shot at least 100k 22lr on the kadet pin w/o issue. Have not broken a TRS either and I use the same lower for 22 and dry fire. TRS gets covered in grease also.  More than 200k trigger pulls on the TRS no failure. 

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  • 2 weeks later...
On 9/15/2020 at 6:23 PM, KlausN said:

I am using a grease for food processing machines SFL-1. I have yet to break a slide stop. Maybe it doesn’t matter as much which grease and it is more about using grease?  I have 2 sp01 shadows and about 25000 9mm rounds between them.  I still use a marked slide stop especially for bigger matches just to be sure. Additionally to the 25k 9mm Nato rounds I also shot at least 100k 22lr on the kadet pin w/o issue. Have not broken a TRS either and I use the same lower for 22 and dry fire. TRS gets covered in grease also.  More than 200k trigger pulls on the TRS no failure. 

Shouldn’t have said anything, just broke my first TRS and launched the replacement across the room into a very safe location, never to be found again.  Forgot to mention I also use a solid trigger pin. 

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On 11/23/2019 at 12:44 PM, Overscore said:

 

I appreciate that suggestion, but now I've lost confidence in CZ and this junky, yet very critical, part.

The gun i have is a SP01 Safety, it has a good polish job, Cajun Gun Works Pro-kit and 11 pound recoil spring.

There is about 15,000 rounds through it and the only failure was the firing pin block retaining pin at about 3,000  and that is when i did the CGW upgrade.

I do have an extra slide stop, but have never replaced it.

This is my experience with my gun. I have however, seen one fail on a 20,000 round PCR,  ¯\_(ツ)_/¯ 

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