SP-01 Shadow with S2 trigger feel

[sil7z]

Hi

I shoot IPSC in Production division in Europe. I had just started with the sport and had limited willingness to splurge on a S2 (~1900€ new), so I got a used SP-01 Shadow as a starter for 800€...and I like to tinker with stuff.

I really like the stock S2 trigger feel and I've heard you can get the S1 pretty close to the S2 feel, so I want go down that route. I've compared the parts diagrams of both models and pretty much all internal parts physically match between the models, except for the trigger, disconnector and hammer.

First, I put in a 11lbs recoil spring and 9lbs main spring from the Eemann competition spring kit to get the DA pull weight to an acceptable level and threw out the DPM recoil reduction system this S1 came with. Put in a Eemann steel guide rod, buffer and the recoil spring from the aforementioned kit. Then I polished the trigger bar and sear surfaces with a Dremel + felt wheel and Flitz polishing paste, as described in great detail in the gunsmithing section on this forum (thanks for the information!). Trigger feels really smooth now. Weighs in at a 4kg/8.8lbs in DA and 1,5kg/3.3lbs in SA. But it still had the quite rounded S1 trigger, which didn't really fit my sausage fingers, so I got a S2 trigger for it. Swap was really simple - I had got the hang of using a wooden toothpick as a slave pin for keeping the trigger return spring in place, which remains the original heavier spring. After that went and got a S2 disconnector. Getting the staked disconnector pin out of the S1 hammer was very doable with a 2mm punch and small hammer. That took care of the long takeup of the SA pull and make the reset ever so slightly shorter.

So with the "story so far" over, my question is which hammer to prefer to hopefully complete that quest for the S2 trigger feel? S2 hammer or CZ competition hammer? Being in across the pond, CGW hammer really isn't an option for me because of shipping costs. Competition hammer needs modification of the sear, does the S2 also need it? With the SP-01 hammer, both SA and DA are already quite good for me, but I still want to put that cherry on top - can I expect it from these hammers?

[tdogg]

The competition hammer will have less creep.  It will drop your sa trigger pull down a bit.

I can't speak to the s2 hammer.

Cheers,
Toby

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[newageroman]

S2 is a waste of money - there - I said it. I build on the SP-01 frames. Once I drop and work the triggers and laugh at stock S2 triggers. Just get a safety model and then pile the Cajun/CZC goodies in. My main pistol(bullshadow SAO) is the first CZ I ever shot. Ordered surplus poor condition for $300...built to tops.

Here is the beginning of the rabbit hole:
https://czfirearms.us/index.php?topic=92370.msg703494#msg703494

here is the end of the rabbit hole:
https://rumble.com/v38hq1r-piles-of-6arc-ammo-and-a-new-holster-that-i-will-promptly-destroy.html

cheers and welcome! Press or Cry like the Rest...

[SoCal]

Sorry you cannot get the CGW hammer or the (I assume) the CZ custom, BUT Eemann Tech  Ultra Light Hammer For CZ 75, SA/DA would PROBABLY be great.  Most of their stuff is very good.  Just ask them.

I have used both CGW and CZ Custom but never a hammer from Eemann Tech.

The lighter trigger return spring will take about .3 to .5# off the DA pull (IF I REMEMBER CORRECTLY).

The Eemann Tech almost straight trigger is my favorite. 

[Andres B]

 Same hammers https://www.zendl.cz/Kohouty-c5_0_1.htm
 This is the actual producer of them.

[sil7z]

Sorry you cannot get the CGW hammer or the (I assume) the CZ custom, BUT Eemann Tech  Ultra Light Hammer For CZ 75, SA/DA would PROBABLY be great.  Most of their stuff is very good.  Just ask them.

I have used both CGW and CZ Custom but never a hammer from Eemann Tech.

The lighter trigger return spring will take about .3 to .5# off the DA pull (IF I REMEMBER CORRECTLY).

The Eemann Tech almost straight trigger is my favorite.

I possibly could but buying overseas just isn't worth it because of additional cost. CZ comp and Eemann hammers (and all of their other stuff) are readily available locally.

I'll consider a straight trigger for SAO conversion when I decide to compete in Standard.

Same hammers https://www.zendl.cz/Kohouty-c5_0_1.htm
 This is the actual producer of them.

Thanks! I noticed Zendl also produces ironsights for CZ. It seems both CZ and Eemann fully adjustable rear sight and front sight blades for S1/S2 are actually a Zendl product with their logos printed on top. Getting slightly higher than stock sights...and with a smaller 1mm diameter optic fiber is also something I plan on doing.

[Andres B]

 S2 original sights will also fit S1. Much higher than originals, tho. By 2mm. Just did the swap. Wonderful. Rear sight is sadly only height adjustable. But sight picture is lightyears better than S1 original ones.
 You might have to check IPSC rules for aftermarket SADA hammer compatibility for Production division. My S1 has TS original hammer and TS trigger, but I shoot Standard division with this gun. Armanov grips are also truly fantastic addition to the combo, very grippy, indeed, and their +1 mag bottoms will also fit the standard box. S2 mag release will work as well. Zendl makes precise barrel bushing also. https://www.zendl.cz/Presne-vedeni-hlavne-CZ-75-17-3-14-d34.htm
 Original CZ SA hammer will work as fine. Just by the feeling- TS old style hammer has slightly more pronounced ,,wall´´. I might be wrong.

[sil7z]

Yes, they will. All those modifications are fine but I will probably stretch them out to a wider period of time - where's the fun in doing everything at once?   Also easier on the wallet.

Speaking of, S2 disconnector is really a great improvement for the price of 35€. CZ comp hammer being close to 100€ makes me think if there's REALLY an improvement to be had in regards to the cost? Might turn out to be a dissapointment...

I polished the sides of the trigger bar and the trigger bar spring channels. It really put the cherry on top in regards to trigger pull smoothness. Took it to the range and the trigger feel was great.

There are some splatters of the frame polycoat on the inside of the frame rails, probably causing a bit of roughness in the slide action. What's the safe way of getting rid of the splatters?

[sil7z]

Got to handle and compare side-by-side with a SP-01 Shadow Orange, which has the CZ competition hammer from factory...and it was pretty crisp. So I shelled out the 100€ or so and first dry-fire impressions are good. Replaced the S2 disconnector with an even fatter Pre-B-like disconnector and reset is shortened even more. For the safety to work, the sear safety tooth needed to have some material filed off, as fully expected. Now it's off to the range...

Edit:

Shot some 60 rounds in competition and the trigger feeling was a bit better than with the round-hole original hammer. Noticed there were occurences of the hammer following (to half-cock) the slide home when the slide was locked back and released - only happened when the slide slammed home. When I let the slide home slowly - it never happened. I fitted the original sear spring instead of the Eemann lightened spring and this issue was resolved.