Where to buy CZ SP-01 Springs?

Perry Wood said:
To follow up on what CeeZer says. If you use the reduced power firing pin spring and extended firing pin and look at your primer under magnification(using federals) after firing you will find that the pin has hung up and dragged down the primer and then bounced causing another light hit.
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Good to know.

Another question I have is once I start testing spring combinations, how many shots should I be firing to ensure reliability? 100?

My goal here is to reduce the DA pull and to make it a bit easier to rack the slide (not that its really hard, I just think it could be easier).
 
KillerPM said:
Good to know.

Another question I have is once I start testing spring combinations, how many shots should I be firing to ensure reliability? 100?

My goal here is to reduce the DA pull and to make it a bit easier to rack the slide (not that its really hard, I just think it could be easier).
Click to expand...

You can try my gun on Sunday. If using federal primers and hand priming you can reduce the double action real low. I have shot over 10,000 with no light strikes and I have a 13 pound mainspring with 4 coils cut off. I have went as low as cutting 6 coils off but then you have to use the lighter firing pin spring of which I am not a fan.
 
KillerPM said:
Very good information! Thanks!

MartyK2500, I am also interested in what your thoughts are on what to have on hand. Derail away!
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I am no expert by any means, but it's someone that set up the CZ for me on day 1 of acquisition (cz was brand spanking new in box), round count is in the 9000s since march '13, and i have yet to have any failures. One thing i have been told and advised, when you run things on the edge like this and reload close to minimum power factor, good maintenance is crucial to get reliability. So i make sure my CZ is properly oiled INSiDE (i see too much people overall overoiling and it drips outside, then affecting grip), properly cleaned regularly (get that extractor out often and scrub it) and change mainspring/recoil spring every 3000/3500, some will say it's not necessary but why not they are worth nothing and you do buy a good bunch at a time. Here are the parts installed.

Thin aluma grips 100% covered with skate grip on weak hand side
Recoil spring, 11#
Main spring, 13#
Front sight, fiber optic, 6.0mm ( i went green as i track better with green, stock is 5.5mm and is shooting high )
Guide rod, S/S
Extended firing pin
Soft firing pin spring (the one they recommend at cz custom when you click on ext firing pin)
Trigger, cz 75, steel, serated (really gives you grip for your double, and actually feels real nice)

A few light mods include
Buffing feed ramp and chamber of barrel so ammo has better chances of feeding smoother
Dremel a bit off ejector, just enough to clear tanfoglio mags. If not they hit ejector everytime and when inserted quickly it can damage ejector. And why use cz mags when the tans feed better, easy install of bumper base plates, and look real shiny ;)

I guess after taking the time to write all this, might as well head for the basement and take a few pics for the visual ones out there. Will be back later with an edit including pics.

EDIT :

Serated trigger


Front sight


Extended Pin next to stock one


You see when the tanfoglio mag is inserted, there is clearance. But at the moment you slam it in, it does push on ejector if ejector is not trimmed. Right now there was space between mag base plate and magwell, but if i push on mag the plate does go up and touch magwell. In that position it touches ejector if not trimmed.
 
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The reason I'm not favouring light firing pin springs is possibility to go full auto ; as inertia of the pin during slide forward movement may set primer off, especially if using federal primers. pin may go forward enough to set off primer.
 
I have heard of this before, that with unpropper maintenance it can slam fire, i have yet to see it with my own eyes.
Myself i use S&B because that was the only product available, if not seems like WIN are good. Even heard of Federal primers going off in the primer tube of the press for all that matters.
 
CeeZer said:
The reason I'm not favouring light firing pin springs is possibility to go full auto ; as inertia of the pin during slide forward movement may set primer off, especially if using federal primers. pin may go forward enough to set off primer.
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Are the primers that are on my factory loaded Federal AE 124gr any different from the "after market" federal ones you folks are using to load with?

I didn't plan on changing out the firing pin or firing pin springs. From what I have heard the 13lb hammer spring should fire most factory ammo just fine. Is this actually true?
 
For your information, i have shot only 3000 reloaded rounds thru this setup so far, and they are the 3000 latest.
My 6000 and something before that we're all 100% no exeption, Federal American Eagle, 147gr. Flat Nose FMJ.
I cannot comment on stock firing pin as it'S never been used.
 
spring selection depends on the gun application: Wolff springs are prohibited for IPSC Production Division.......

try A-Zone, on this site...he has all the parts for your SP-01 :)
 
Perry Wood said:
You can try my gun on Sunday. If using federal primers and hand priming you can reduce the double action real low. I have shot over 10,000 with no light strikes and I have a 13 pound mainspring with 4 coils cut off. I have went as low as cutting 6 coils off but then you have to use the lighter firing pin spring of which I am not a fan.
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what do you use your Shadow for?????
 
I have a contact # for a guy who brings in Cajun Gun Works parts. I have them on my shadow and they are top notch. PM me if u want it.
 
CeeZer said:
The reason I'm not favouring light firing pin springs is possibility to go full auto ; as inertia of the pin during slide forward movement may set primer off, especially if using federal primers. pin may go forward enough to set off primer.
Click to expand...

The extended firing pin actually rests on the primer with the slide closed. I took an empty case with a live primer and chambered it and then beat the hammer against my wood bench to see if I could set it off but had no luck. Light firing pin will not cause it to go full auto, on the other hand a light sear spring will, so be carefull when tuning that spring.
 
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