I bought a SP-01 on gunbroker a short while ago and it came with a custom shop hammer and a trigger job by Pawel Janusz as well. After about 600 rounds it was as smooth as I thought a gun could get, but I didn't like the length of the reset so I bought Cajun Gun Work's SRS-2 kit and a new disconnect and installed them last Sunday. I also did all the steps in the Shemeckys' smoothing the action thread and the thread by KonigsTigerII on disassembly and polishing that are on the CZ forum. Lastly, I took CGWs advise and bent the trigger bar rest spring arms so that they engage the grooves in the bottom of the trigger bar more precisely. Being a tinkerer by nature it was a very enjoyable day in itself,but the best was yet to come.

 

I have been to the range and have to say I was wrong about the gun being as smooth as gun could be before. It is amazing. The SA is like silk with the block still in just as CGW promised it would be and the reset is at the very least 60% shorter. I deliberately fed it a mixture of cheap range ammo brands and even with the 11.5# mainspring it has been perfect. There isn't a thing I'd change on it now.

if you put in a lower power mainspring, you might want to add CGW's extended firing pin.

 

I'm running a 11.5# m/s on my Shadow with the extended f/p.

 

Every now and then I get a light primer stikes when the firing pin hole on the breach face of the slide get dirty. If it's clean, my shadow runs like a top. Also, buy a spare or two trigger return springs. They break every 1000-2000 rds (or dry fires).

Posting here so I can find it in the future.  I've got 3 PPP's inbound by the end of the month and planning on getting a CZ. Time to start hunting!

I would like to add a CZ to my collection on my next round of permits.

 

I like the classic European look.  I also want a steel gun.

The extended firing pin is part of the SRS-2 kit and is probably the easiest part of the whole job except for putting CGW's retaining pin in which I didn't do as I am not ready to take a drill to the gun, and the old retaining pin went back in fine.

Interesting news on the trigger return spring. I'll have to pick up a couple of them in case. Any other quirks to watch for?

As I said, not a single misfire or other issue yet and I clean that area after every session of 100 or more. I am not sure, but I think Janusz sent the gun to me with one of the 8.5# mainsprings and I had 2 DNF in 600 rounds both of which fired with a second strike. I put it in with the kit just to see what it felt like and it was too light feeling in SA but was amazing in DA. It was spooky like if you thought about firing it could go off or something. I fire about 99% SA so I took it out and use the 11.5.

CGW said this set up is as Shadow-like as it gets with the block in. In fact they said you won't be able to tell the difference in a dark room. I have never shot a Shadow even under normal lighting but the wait on buying one was beyond my permits time limit so I grabbed this one up when it became available. Zero regrets as it gave me the excuse to get into all that polishing work etc in the OP.

If you re-load, you can tailor ammo for your CZ set up.

 

When they become more readily available, I'm planning to get a SP01 as back up for my Shadow.