Giving my P-01 some Cajun mojo

[Sulpgnir]

For my CZ P-01, I want to improve the DA/SA pull and smooth out the internals without removing too much materials.

Current pulls:
DA 10.7#
SA 4.7#

I got started on the project last night.

First, safety check the firearm and then remove the slide from the frame:



Second, remove grips and mainspring assembly:



Third, remove the decocking lever - I used a pointy wooden stick to lift and hold the sear spring to free the decocking lever:



Next, slide the sear pin retaining disc out of the groove to expose the sear pin:



Next, use a punch (no bigger than 2.5mm) to start driving the sear pin out of the frame, from right to left.  I used a slave pin I made to keep the sear cage together:




Then, use a 3mm punch to drive out the firing pin retaining pin and take out the firing pin block:



Next, use a 1/16" solid starter punch and then a 2mm punch to drive out the trigger pin:




Here is everything (well, almost, I left the trigger bar spring and magazine catch in place):



These bits I will smooth out tomorrow:



Here are the CGW goodies:



Dry-fitting the decocking sear cage.  The actually fitting shouldn't take too long:




Some thoughts:

This is the first decocking model that I took apart completely.  The one-sided disconnector is certainly different from the safety model, as well as the trigger bar.  I am sure that I will find out more as I complete project.

Being an alloy frame, I am not sure if anyone would try to remove the sear cage more than a couple of times.  Eventually, the sear pin may walk out on the right side

[rm06]

Thanks for posting, interested in following. I like pictorials

[Sulpgnir]

Quick update:

These parts were smoothed out using 400 to 3200-grit sandpaper and finished up with light polishing using Flitz:  (The parts were also cleaned to remove any residual polishing compound before applying some moly.)



Sear cage assembly using long slave pins:  (The tough part was the decocker spring.  I had to pull them around both the sear leg and the decocker leg as if it owes me money.)



Finally, reassembling the P-01 back together:



I also installed a 17# recoil spring as part of the upgrade.  Should be better with 115gr Fiocchi and S&B ammos.

All functions tested and passed

The trigger is very smooth and the break is clean.  There is a little bit of take-up but not too bad.  The only sound (click) I hear is when the sear engages the safety stop on the hammer.  The reset is about the same. 

New pull results?

DA - 7.7#
SA - 3#

I still have the Dawson FO front, but I will wait until a quick trip to the range.

[adrian]

     Hiya and thanks for sharing the project, I kinda like the camera as much as the gun. Be well.

[earlan357]

Awesome pics.  Shiny black metal is hard as hell to photograph.  Are you using a polarizing filter?

[Sulpgnir]

     Hiya and thanks for sharing the project, I kinda like the camera as much as the gun. Be well.

I find both very therapeutic

Awesome pics.  Shiny black metal is hard as hell to photograph.  Are you using a polarizing filter?

No polarizing filter for these pix, but I did use a macro filter for some closeups. 

I have a two-light setup (light boxes,) one overhead and one to the right.  The overhead one doubles as my work light.   

[Sulpgnir]

Well, I decided to finish the project by installing the Dawson FO front.  Just want to git'er done, I guess.

Out with the old, in with the new:







The front sight installation was straight forward with the supplied nylon punch.  After removing the retaining pin with a 2mm punch, I secured the slide at an angle, and with a downward motion, I tapped it out with the nylon punch.  The new sight needed some light sanding for fitting, but it wasn't too bad.

All contact surfaces were cleaned, de-greased and prepped for installation.  Per Dawson Precision, I used Loctite 272 on contacting surfaces and tapped in the new sight.  It was a snug fit.  Finally, punched in the retaining pin to secure the sight.  It will take about 24 hours for the Loctite to cure.

The narrow red FO front is much easier for my eyes to pick up

p.s.  Had a small hiccup with the front sight retaining pin.  It started un-rolling halfway into the frame.  I backed it out, took a good look and decided to get the spare that I ordered previously (wheeeew.)

 

[rm06]

Well done. My P01 needs work, I just need to scratch together some funds to make it happen

[czdrifter]

Very nice presentation. Well organized and photo documented. As others have mentioned, great job on the photos!

[MadDuner]

Nice job!