Recently i got around to digging into my CZ P-09 FDE for its second pass. After shooting the P-09 stock for aprox. 500 rounds, i had installed the full CGW Pro package parts without doing any other tuning. When time allows i prefer to just drop the parts in and shoot a pistol a bit, learn what i can and then go back in and do the polishing and further tuning on a second pass. Some of my CZs have been satisfactory after one pass. Others have benefited from 3 or more. For clarity, the CZs that require the most passes are the most fun because generally they allow me to learn the most. Sometimes i even wish some of my CZs would malfunction more often so that i would have a good reason to dig into them again. I may end up making some parts up to induce malfunctions so that i can learn more about them at some point.
I have never had the same love for the Omega trigger system that i do for the classic CZ 75 variant trigger system. I am not as familiar with the Omega system and i do not really consider it an improvement over what came before. I recognize that in stock configuration the Omegas have been known to be better out of the box in some cases. Generally my CZs do not remain in stock config, they are far to fun to work on to be left alone. So the potential assets of the stock configuration are lost on me. I will continue to try and keep an opened mind and in time my opinion may evolve. I still believe that folks that are satisfied with a their CZ in stock configuration win big, no fuss and no added cost. However, they do not get to have as much fun taking them apart.
Out of the box and even once the upgrade parts were installed this P-09 had the worst Double Action i have encountered in a CZ. The DA was very heavy, it stacked allot throughout the DA pull and was quite stagey. The Single Action was alright in stock configuration. While it had some creep it was quite smooth, serviceable and easy to shoot. With the installation of the CGW P-Series hammer the SA creep was removed. There is still some hammer camming but it is much reduced from the factory hammer.
The DA being my major issue, lets start with that. Using the P-Series tuning guide that Schmeky posted long ago (Linked below) i went after the Trigger Bar first. The P-Series single sided trigger bar arrangement differs from a 75 variants two sided trigger bow. Due at least in part to its design and manufacture the P-Series trigger bar can shift and wrench against the side of the pistols polymer frame and negatively affect the DA pull. The issue seams to be the inconsistency of the side of the trigger bar that contacts the frame. As covered in the guide, to remedy this the trigger bar needs to be made more flat and consistent and then polished so that it slides across the frame during the DA pull rather than repeatedly jamming up. Reducing the tension on the trigger bar spring can also improve the DA and adjusting it only takes a few seconds to achieve.
With the assistance of my 75 Plus CZ pistol stand The P-Series trigger bar is removed.
The P-Series are a little faster to disassemble than a factory 75 variant. In a few minutes you can take an assembled pistol and turn in into an explosion of parts.
The factory P-09 Trigger Bar close up.
The P-09 Trigger Bar after a bit of sanding against a hard flat surface. As you can see this trigger bar was far from flat.
After much materiel removal, polishing and deburring of the sharp edges, the Trigger Bar is finished. I used only sand paper on this pass, 400, 600, 1K, 2K grit. The 2K sandpaper brought the finish close to a mirror shine. Polishing compound did not seem necessary but time will tell.
On to the trigger bar roller. The P-Series roller diameter and concentricity can affect the DA pull. At this point i have only a limited understanding of the rollers impact on the action timing. My roller had consistent wear marks all around the roller. I checked its roundness and gave it a polish. Sand paper only on this pass. Polishing a round object of this size was a first for me within CZ tuning, i needed to maintain the rollers roundness so i made a jig for my Dremel out of some brass rod, mounted the roller onto it and polished it up. Here are some pics.
I tried out a sanding tip that Schmeky posted in one of his guides. Sandpaper strips, one end taped to a reversed Dremel bit. With the sand paper rolled up around it so that once the paper is worn out you can tear off the outer layer and go back to work with the fresh layer underneath. This worked well and saved me some time.
The pins were up next. Trigger Pin, Hammer Pin, and the Sear Pin. These are straight forward, chuck them in a Dremel or a drill for the larger diameter pins and polish them up. One of the assets of shooing a CZ a good bit before you do the polishing is the marks that use leaves on the parts, these marks can tell you allot in some cases. Note that some of the sharp edges where the diameter of the pins change needs to remain sharp. The step down at the center of the P-Series trigger pin is a good example of this. I polished some areas of these pins that are likely unnecessary.
Please review the guide linked below.Pins before.Pins after. Now for reassembly. I run the decocking lever in my P-09 and this can be a tricky part of the reassembly. In the past i had just winged it and fought with the process of tucking the decocker spring leg into place. This time around i made a tool as forum member JoeL has suggested in the past in his videos (Linked Below). It made the process more easily achievable. Glad i took the time to make one.
All said and done the second pass on this pistol significantly improved the DA pull. Before this process the sights moved every time i pulled trough the DA regardless of the speed i pulled the trigger or how much i concentrated on avoiding it. After this pass the sights no longer move, unless i am slacking. It is still not as smooth as a well tuned 75 but it is getting there. With some use, i believe that it will continue to smooth out. A bit of lube is not a bad idea ether.
The DA was my biggest gripe with the P-09, i guess i have less to complain about. Even though it is not a 75 variant. In time me and this pistol might just become friends. Not good friends mind you, my 75s would not have that:) I also learned some things about the Omega trigger system. While i have much more to learn about the P-Series it is a step in the right direction.
If you are motivated to work on your own CZ P-Series pistol please take the time to review the guides produced by other forum members linked below. I have been over them many times and continue to benefit from them.
How to Tune, Smooth and Upgrade the P-07/P-09https://czfirearms.us/index.php?topic=66147.0JoeL's P-Series Videos.https://czfirearms.us/index.php?topic=63210.0