Bad experience - CZ P-09 and Kaw Valley Precision Comp

[Mark_Mark]

Land of the free...... Well, sorta.

They got the $$$ now they want control... it’s always about CONTROL

 

[Terry G]

The CZ P-09 is one of the most dependable 9 MM I own. But mine is stock, I hardly ever do anything to a gun that's working fine other than fiber optic sights. I certainly wouldn't get rid of a fine gun because an add on modification makes it unreliable.

 

[trackskippy]

If they are selling it with a factory threaded barrel and suppressor sights, you would think they would make sure it worked with any suppressor or muzzle device mounted. Wouldnt you?

My P10 worked fine without the suppressor, but it was sold specifically as a gun meant for suppressor use.

 

[12Bravo20]

I am a member of the Marine Gun Builder forum that specializes in building 80% frames/receivers, especially the Polymer 80 frames. I see people having issues all of the time when adding a comp to their pistols when using a factory weight recoil spring. Going to a lighter recoil spring normally fixes the cycling issues every time. And this is true for most semi-auto pistols. And this is also why a lot of pistols require a Nielsen device/muzzle booster for them to cycle properly with a suppressor mounted.

 

[trackskippy]

Just curious, as I thought most of the centerfire handgun suppressors came with the booster/piston, at least all of those Ive shot have, not that that's a lot. Who makes them without?

Im still kind of confused as to why a big name maker, that sells a gun meant for something to be added to the muzzle end, wouldnt make sure that the gun would run with anything attached. If the recoil springs are the issue, then why not install them, or at least give you one that would guarantee function, if you decide to put something on.

I have a number Glocks and Berettas with threaded barrels, and all have run fine with or without the suppressor mounted. Seems odd that the CZ's wouldn't, but maybe Im missing something.

 

[12Bravo20]

Running a suppressor (especially with the booster) is different than running a comp. I can't speak for all of the different manufacturers but if I had to guess, they make them and install the correct weight spring for the most reliability in stock form. And I have seen enough guys try to run a suppressor meant for a rifle on pistols and then wonder why they now have a single shot.

 

[JDGray]

Did you try shooting it upside down? That would answer the "Pressure on the hood" question.

 

[Fishbed77]

If they are selling it with a factory threaded barrel and suppressor sights, you would think they would make sure it worked with any suppressor or muzzle device mounted. Wouldnt you?

My P10 worked fine without the suppressor, but it was sold specifically as a gun meant for suppressor use.

My P-07 Suppressor-Ready works flawlessly with a Rugged Obsidian 9 when using a muzzle booster. I’ve seen a P-09 work as well. It seems CZ did their homework.

Is it possible (or even reasonable) for CZ to test their pistols with every single muzzle device on the market? And predict new devices that come to market?

No.

In regards to the OP’s issue, it still stands to reason that the weight of the muzzle device hanging off the front of the barrel is causing the malfunction. It is possible that the design of the P-09 is more susceptible to such a muzzle device-induced malfunction (perhaps due to a leverage issue exacerbated by its long barrel)? Maybe. But it is a characteristic endemic to all Browning-style short recoil tilting barrels, and is the reason why muzzle boosters exist for use with suppressors.

 

[trackskippy]

My suppressor has the piston, and isnt really a big or heavy can. I still think its the bevel on the hood just needs a tad more relief.

If you look on YouTube, there are a number of videos showing exactly the same problem, and most of them say it more or less starts to correct itself as the gun is shot in with the suppressor mounted. Mine was basically doing the same, but was still struggling.

The P10 is basically a Glock copy, and the same suppressor on all my Glocks has never had an issue. They also have a noticeably different bevel on the hood.

 

[Orion8472]

The Kaw Valley Mach 3 device is very light in weight. I really can't believe that it would be what is causing the malfunction.

BTW, what is a muzzle booster? Does anyone have a screen shot of one?

 

[reddog81]

I have Kaw Valley linear comps on rifles and they work fine. As far as I know they weren’t meant to be put on pistols. Any comps built for pistols are short little things and not 4” long.

 

[12Bravo20]

The Kaw Valley Mach 3 device is very light in weight. I really can't believe that it would be what is causing the malfunction.

BTW, what is a muzzle booster? Does anyone have a screen shot of one?

Here is a video explaining what it is and how it works. And yes they are needed on pistols when running a suppressor.