You cannot avoid replacing springs, even if you are completely satisfied with your CZ just as you took it out of the box. They are subject to wear and tear, so from time to time you have to replace them for purely maintenance reasons.
Spring stiffness also fundamentally affects the behavior of the gun – how unpleasant the recoil is for you, how easily the gun racks, how reliably it ejects the casing, or how hard you have to pull the trigger.
Different shooters require different things from their pistol:
- sports shooters prefer a light trigger,
- those who have guns for self-defense, on the other hand, do not want it to fire accidentally.
To help you understand what each spring affects and how changing its stiffness changes the handling and behavior of your pistol, we have written a series of articles for you about individual springs. In this article, we focus on the recoil spring. You can find other articles here:
- Part 2: main spring and firing pin spring
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Part 3: trigger spring
- Part 4: extractor spring and magazine catch spring
ATTENTION: For CZ models, we must distinguish between two versions of pistols: classic hammer-fired models (e.g., CZ 75B, CZ 75 SP-01 Shadow 1, CZ Shadow 2, TS 2) and modern striker-fired models (CZ P-10 series). Each of them has its own specifics, also when it comes to springs.
Where to find springs on our website
You can find complete tuning spring sets, individual springs, and original CZ parts in several places:
- in the Springs category (focused on tuning sets),
- in the Spare parts category (original CZ parts),
- and in the Spare parts and Springs subcategories for individual models under the By model category.
TIP: Also check out Pins, which the springs cannot do without.
Where to find the recoil spring?
You can find it in all CZ models on the guide rod under the barrel.
How the recoil spring works
It controls the forward and backward movement of the slide.
Upon firing, the gas pressure first drives the slide backward at tremendous speed. At that moment, the recoil spring serves as a buffer that brakes the slide so it does not shatter the frame. At the same time, the empty casing is ejected during this phase.
As soon as the slide reaches the very end, the recoil spring is fully compressed. The gas energy is gone and the spring returns the slide to the forward position. In doing so, the slide feeds a new round from the magazine into the chamber.
When to replace the recoil spring
The recoil spring is the most stressed spring in the entire gun. Purely as a preventive measure, we recommend replacing it at regular intervals: the factory spring after 5,000–10,000 rounds, a lightweight spring more frequently, after 3,000–5,000 rounds.
How to recognize a worn-out recoil spring
You can also recognize the need to replace the recoil spring by the following signs:
- The casings fly very far and violently (even further than 3 meters) because the slide moves backward very quickly.
- A very unpleasant recoil, the pistol "kicks" a lot. This is because the slide hits the frame very violently. In addition to the unpleasant feeling, there is a risk of irreversible damage to the frame.
- The muzzle rises significantly after firing.
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Failure of the slide to go fully into battery.
You will experience the same situations when you replace the recoil spring with a lighter one with lower resistance and overdo it.
How to recognize a recoil spring that is too stiff:
On the other hand, when you replace the spring with a stronger one or keep it and get weaker ammunition, you may encounter these inconveniences:
- The casings practically do not fly anywhere or just a short distance from you.
- A so-called stovepipe occurs – the ejection port pinches the ejected casing.
- After firing, the gun has a tendency to dip.
The strength of the recoil spring correlates with the power of the ammunition
The logic is simple: Stronger ammunition creates more pressure and acts on the slide with greater force. The stronger your ammunition is, the stronger the recoil spring you need, and vice versa.
Recommendations for sports shooters
Sports shooting requires the smoothest possible gun operation. Sports ammunition tends to be weaker, and the factory spring (14–16 lb) can be too stiff for it. Sports shooters therefore often choose a recoil spring weight between 10 and 13 lb.
TIP for owners of CZ Shadow 2 or CZ 75 type guns: A proven combination for sports shooting has become an 11 lbs recoil spring and an 11 or 13 lbs main spring. You can also use a complete sports spring set right away, which tune perfectly together.
TIP for owners of CZ P-10 series guns: In striker-fired guns, shooters often replace the plastic guide rod with a heavier steel or brass one and combine it with a weaker spring. The higher weight on the front of the gun significantly calms the gun's behavior.
Recommendations for self-defense
With standard ammunition, you can keep the factory spring. Look for a stronger one provided you switch to more powerful ammunition.
We do not recommend changing the recoil spring to a weaker one for a gun used for self-defense in order to maintain 100% reliability of the gun.
Can I replace the recoil spring at home by myself?
Yes, you can replace the recoil spring yourself without any problems and without tools during a basic field strip of the gun.