Ever crack a CZ polymer frame?

[namsag]

I am just getting into the CZ pistols, don't know what took me so long.

One thing I have noticed is the polymer seems different from Glock.  It seems more rigid and inflexible.  On a Glock I can flex the magazine well down at the bottom and even the front of the frame a little when the pistol is disassembled.  No flex that I can see on my P10C.

We have all seen videos of how much the Glock frame flexes when the pistol is fired.  I am sure the CZ does too, but it just seems inflexible enough that I could see it cracking at some point.

I know that there are stories of Glock frames cracking in very high round count pistols.  Who has a crack in their P10C and what have you done about it?  Shoot it?   Contact CZ?

I did find this video from 3 yrs ago, but not a whole lot of info:

https://youtu.be/7iw_6HwQP7U

I really love my P10c, so much I bought another one as a spare/backup, the Glock 19 just pretty much sits in the safe these days.

[briang2ad]

Would it be OK to start referring to problems as problems?

[Practical Shooter]

I think polymer frame cracks are very rare exceptions in the polymer world. Yes it can possibly happen, nothing is perfect, but it is such a rare occurrence as very few people complain about it. I personally never heard of it on this forum or anywhere else (except that video), and would think we would hear about it here before CZ even knew of it.

[DOC 1500]

Okay, I'll play The Devil's Advocate here. What the heck are you people doing that you're worried about cracking a frame. Combat Maneuvers or something of that sort.😳

[30-30]

interesting, this video is from Aug 6, 2018, it may have occurred, but this is the first I have ever heard about this issue.  I think if "frame cracking" of CZ polymer handguns was a continuous issue there would be multiple posts on this forum...   

[SI VIS PACEM PARRABELLUM]

There was talk of this early on but I don't think many had anything more than hairline mold marks. If there was a prevalent frame cracking issue we would know about it. The guy in the video is just another hand wringer providing no useful information. He would not fully disassemble the gun and show the cracks he claims to have so watching his video was just time wasted that I can't get back now.

[Joe L]

The only thing I ever worry about on my 6 polymer CZ's is how I am going to find and pay for enough ammo to wear them out.  The frames do not have any flaws.  Go shoot your pistols.

Joe

[Tanners Owner]

First I’ve heard of it too, and am skeptical if he wouldn’t show it on camera.

I have a P10c and shot it in my IDPA season last year. Not a single problem.  As I also have a S, I’d consider a full variant ( or better a 45 acp compact variant).

[Fuzzy Sights]

Have a P-07 in 40 and with several thousand rounds through it using Bowling Pin Loads and defensive ammo (it is my carry gun)  0 issues, much less a cracked frame.  If there was an issue in 2018, it does not show up in my pistol (which oddly enough is a 2018 model and still uses 75 compact mags.)

My experience.  Do not think I would worry much about it.

JW

[CCWLearner]

I have a black P-07 made in 2017 and an OD green P-07 made in 2018.

Both frames had a ridge or seam from the molding process that was easy to see around the beavertail and the trigger guard.  The OD green frame had a bigger, more pronounced one that could irritate the webbing in your hand under live fire.  It wasn't bothering me but it raised a welt on my son's hand every time he shot it.  So I used some fine grit sandpaper by hand, and a rotary tool with a felt wheel and blue polishing compound, to remove it from both frames, leaving a smooth surface there.

These are the only issues I have seen with my CZ polymer frames, after putting a few thousand rounds through each of the pistols, having the frames detail stripped multiple times, and carrying them on a regular basis.  I haven't removed the front or rear inserts but I have stripped out everything else from both of them, on several occasions, while cleaning or installing aftermarket parts.  Never saw any signs of cracking, premature wear, warping, or anything like that.

[Winkel]

I spent a lot of years in the plastics, injection molding industry.  I would bet that Glock and CZ use pretty much the same material for their frames.  It's likely a different supplier and different trade name but likely both a 30% glass filled nylon.
IF you ever suspect you have a cracked frame (which is HIGHLY unlikely), and it weren't from extreme negligence, I would bet CZ would replace it.  If it's a manufacturing defect, their engineers could tell. 

Again, it's highly unlikely so I wouldn't over think this.  Just shoot it and enjoy it.

[sd408]

Being from CA this is probably my biggest concern with getting into polymer frame handguns. I have a P07 and P10C on standby for pickup but i wonder if in 5+ or 10+ years time, the polymer frame will still be as rugged as new. If a frame issue were to arise, I’d be bleeped cuz the CA roster… wouldnt even be able to send it in to CZ, let alone receive the original or new frame back. Is there a certain “age” that you guys would begin to be concerned about polymer integrity?

[SI VIS PACEM PARRABELLUM]

Being from CA this is probably my biggest concern with getting into polymer frame handguns. I have a P07 and P10C on standby for pickup but i wonder if in 5+ or 10+ years time, the polymer frame will still be as rugged as new. If a frame issue were to arise, I’d be bleeped cuz the CA roster… wouldnt even be able to send it in to CZ, let alone receive the original or new frame back. Is there a certain “age” that you guys would begin to be concerned about polymer integrity?

There's nothing to indicate the age of the plastic whether it be measured in time or use is causing any degradation of it's integrity. They've got the formula figured out pretty well at this point but unfortunately you have people making and posting vids like the one here who have not the slightest idea what they are talking about and that causes those who are even less knowledgeable about such things to panic.
I've seen no one complain about a 20 year old plastic gun falling apart anyplace. I have however seen plenty of people talking about those guns running for tens of thousands of rounds reliably.

[Joe L]

Being from CA this is probably my biggest concern with getting into polymer frame handguns. I have a P07 and P10C on standby for pickup but i wonder if in 5+ or 10+ years time, the polymer frame will still be as rugged as new. If a frame issue were to arise, I’d be bleeped cuz the CA roster… wouldnt even be able to send it in to CZ, let alone receive the original or new frame back. Is there a certain “age” that you guys would begin to be concerned about polymer integrity?

My opinion, based on my own limited experience with several CZ polymer pistols, is that the frame is going to be fine for many, many years.  My original P-09, bought when they first came out, has somewhere between 10k and 20k rounds, has been in dry, wet, cold, and hot climates and is STILL my standard for (my version of) 9mm long range precision pistol shooting.  I worry more about barrel corrosion than frame failure.

[sd408]

Fair enough, and i appreciate the response. What got me initially worried was when i stripped down my frame. The area where the bigger roll pin sits on the frame has two small cracks on each side, just like the OP video describes. It apparently is a “normal” crack on a P10C and shouldnt effect function/reliability, but regardless a crack is a crack. I’ll try to take a pic when my enhanced slide release comes in and i have to take it apart again.

Video here, shown around the 8:50 mark. https://youtu.be/bYRYTaLGtmA