Author Topic: life expectations for CZ parts  (Read 1274 times)

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Offline dominic135

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life expectations for CZ parts
« on: September 08, 2016, 10:37:42 PM »
I'm sure I asked this question before but can't find it anywhere.

I'm new to shooting but I practice regularly. Had the CZ75b about 7 or 8 months now and this gun has about 5000 rounds through it and expect to shoot heavier once I get my reload going.
My questions are, what component is worn out quickest and should I replace certain parts before they die? For instance, when does the barrel tend to go? 10k rds., 20k? Should springs be replaced on a regular basis?
My trigger finally lost it's creep at about 4K rds. Is that normal?
There must be a reference book that covers this. If someone could refer me to a good book for beginners on CZ gunsmithing. I'd love a referral!
Thanks

Offline derweibhai

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Re: life expectations for CZ parts
« Reply #1 on: September 08, 2016, 10:42:38 PM »
Recoil spring should be replaced at 3-5k. Slide stop at 20-35k, other than that, you should be good for quite awhile.

Offline 1SOW

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Re: life expectations for CZ parts
« Reply #2 on: September 08, 2016, 11:33:00 PM »
I haven't seen a thread or post where an original owner had worn out a CZ 75B barrel.
I can vouch for 60K rds out of a 9mm 75B barrel.

The trigger return spring is also noted to break eventually after high trigger pull counts.  Hard to say how many rounds,  because dry fire also exercises the spring.
I've broken two or three (one lately in my 75 Shadow),  and they have lasted into the 20K + rds fired range.

Offline dominic135

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Re: life expectations for CZ parts
« Reply #3 on: September 10, 2016, 12:00:46 PM »
OK! Thanks for the info!


Offline dominic135

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Re: life expectations for CZ parts
« Reply #4 on: September 10, 2016, 12:34:03 PM »
Talk about expectations! As mentioned in orig post, I just passes 5K rds. Last week I had two 'failure to return to battery' shots I chalked up to carbon buildup on ramp! Maybe that was from a weak spring!
Guess you could call that "JITK", Just In Time Knowledge!
Thanks!

Offline M1A4ME

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Re: life expectations for CZ parts
« Reply #5 on: September 10, 2016, 04:27:39 PM »
Anyone ever use a heavy trigger pull ga. to measure how much force it take to rack the slide on a pistol with a new recoil spring (yeah, you might want to cock the hammer first so you're not adding that to the recoil spring compression) and then measure it again every thousand rounds or so to see when/how much deterioration you get as the spring weakens?

You know if the hammer spring weakens then you might be able to read that, too, if you can put the trigger pull ga. hook through the hole in the hammer.

Awhile back I bought an aftermarket recoil spring for my 1911.  It's a flat spring, not the standard round wire spring.  The well know pistol parts manufacturer's add said the flat springs can last up to ten (10) times as many rounds as the older round wire springs.  I'm not saying I believe them, I'm saying that's what their description said.

And so far, on this web site I've only seen folks mention that their slide release broke/cracked at some point.  I did see, on another forum, a complaint about a P09 trigger return spring breaking shortly after the guy bought it.  Seems like someone mentioned breaking their firing pin retaining pin in a CZ, maybe more than one person though.
I just keep wasting time and money on other brands trying to find/make one shoot like my P07 and P09.  What is wrong with me?

Offline 1SOW

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Re: life expectations for CZ parts
« Reply #6 on: September 10, 2016, 10:40:15 PM »
On the CZ 75 models with a firing pin interrupt safety feature,  the pin that holds the FP in plans,  rides in a slot on the firing pin.  When the pistol is dry fired,  the firing pin HITs the retention pin (  a roll pin) full force.  Eventually it can/will crack or break.