Where to purchase new recoil spring for CZ75b-sp01 shadow

TheTexan

TheTexan

Member
EE Expired
Rating - 100%
11   0   0
Location
Alantic Canada
Hey
I want to replace a few parts in my trusty CZ75b-sp01 shadow. Its about 8 years old, has 10,000's of rounds down the pipe and the recoil spring is showing is wear. I want to purchase a new recoil spring, recoil rod and slide stop. Does anyone know where I can purchase/order? I live in the Halifax area.

Thanks
 
Thanks guys
Another stupid question, what is the difference between a 11lb, 13lb and 15lb recoil spring? Other than being stiffer! Why would you use an 11 vs 13 vs 15?

Thanks
 
TheTexan said:
Thanks guys
Another stupid question, what is the difference between a 11lb, 13lb and 15lb recoil spring? Other than being stiffer! Why would you use an 11 vs 13 vs 15?

Thanks
Click to expand...

From what I understand, the difference between the different recoil spring rates is that different weights will affect the force that is applied to the slide, and consequently the speed, as it cycles backwards after the shot is fired and then comes forward after it reaches its most rearward position. How hard (fast) the slide comes back is what is perceived as "felt recoil". (Or at least it is one of the main components of felt recoil.) Therefore, the lighter the spring weight while still functioning properly the better. (I know that sounds backwards, but that is how it was explained to me.) With a lighter spring, if you reload, you can also use a lighter powder load in your ammunition. At that point, it becomes a "balancing act" to find the lightest powder load while still making Power Factor (if applicable) and the lightest spring to give the softest felt recoil at that powder load while still functioning properly.
 
Texan, the 11lb is for competition with lightly loaded ammo...can't shoot 9mm+P without risking damage to the gun. 13lb is what my friends and I run, you can shoot some mags of 9mm+P but it's ideal for standard loaded target ammo...it lightens the slide and makes it quicker and smoother to operate. 15lb is factory stock, designed to make the gun reliable when shooting a steady diet of NATO 9mm+P, and ideal for military and law enforcement. Hope that helps.
 
Hoag said:
From what I understand, the difference between the different recoil spring rates is that different weights will affect the force that is applied to the slide, and consequently the speed, as it cycles backwards after the shot is fired and then comes forward after it reaches its most rearward position. How hard (fast) the slide comes back is what is perceived as "felt recoil". (Or at least it is one of the main components of felt recoil.) Therefore, the lighter the spring weight while still functioning properly the better. (I know that sounds backwards, but that is how it was explained to me.) With a lighter spring, if you reload, you can also use a lighter powder load in your ammunition. At that point, it becomes a "balancing act" to find the lightest powder load while still making Power Factor (if applicable) and the lightest spring to give the softest felt recoil at that powder load while still functioning properly.
Click to expand...

I found that it's the other way around. We want to use as heavy a spring as we can that still provides a fairly energetic ejection of the spent cases. A lighter spring allows the slide to come back harder. And that comes through as a harsher sort of recoil when the slide slams into the frame at the end of the travel due to the spring not absorbing enough of the recoil energy. A harder spring will limit or prevent this slamming of the slide against the frame and reduce the perceived recoil shock.

But get the spring too stiff for the ammo and we run into other issues. Namely weak ejection and higher chances of stovepipe jams and failure to lock open at the last round.

The 13lb spring is the standard issue to be used with regular factory ammo. The 12 and 11 lb springs are intended for those that reload their own ammo and shoot at the minimum power factor used in IPSC, IDPA and other such competitions. There MIGHT be room to use a 12 lb recoil spring with factory ammo but watch for signs of damage on the metal to metal points. And likely as not you'll also run the risk of the slide stop having a shorter lifespan. And since CZ's like to break the slide stop when undersprung anyway if you want to run a lighter spring to try this you may want to order up a spare slide stop at the same time.
 
You must log in or register to reply here.
Back
Top Bottom