• Reduce your trigger pull from a stock 2.0 lbs to a modified 1.0 lbs
  • Nearly a 50% Trigger Pull Reduction!
  • Improved accuracy and overall rifle performance
  • Protected by the M*CARBO 100% Lifetime Guarantee
  • Made in the USA!
  • Fast Same Day Shipping!

CZ 452 Trigger Spring Kit / CZ 455 Trigger Spring Kit

  • Consists of a custom designed Trigger Return Spring

Fast and easy CZ 455 Trigger Job that will reduce your trigger pull and improve overall accuracy. Engineered to be a safe and effective CZ 455 Trigger Adjustment and CZ 452 Trigger Job. No need to spend a ton of money on an entire CZ 455 Trigger replacement, just upgrade the trigger return spring and see if it's enough trigger pull reduction first. The CZ 452 Trigger Adjustment is simple and very effective. The CZ 452 and CZ 455 were designed in a way that makes adjusting the trigger very easy. CZ even built in a trigger pull adjustment feature on their factory triggers to really dial in your trigger pull, all you need is a specially designed trigger return spring to take it one step further and really unleash that factory trigger potential!

No Hassle 100% Lifetime Guarantee on Parts & Accessories:

The CZ 452 Trigger Spring Kit / CZ 455 Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee against any product quality issues or workmanship defects. If parts fail or are deemed defective we will send you a replacement regardless.

Drop Tested and Approved:

M*CARBO ASTM Spec Springs will offer a perfect trigger pull reduction with an unlimited drop test rating (3", 6", 9" & 12"+).

Range Tested and Approved:

The CZ 452 Trigger Spring Kit / CZ 455 Trigger Spring Kit has been tested repeatedly with numerous brands of ammunition to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made CZ 452 Trigger Spring Kit / CZ 455 Trigger Spring Kit designed and manufactured by Combat Veterans. We will donate a portion of your purchase to the Military Foundations we humbly support.


You must be 18 yrs of age to purchase. We advise that all parts purchased from our inventory be installed and inspected by a qualified gunsmith. Modifying your weapon may be prohibited in your state. Do not modify your sear or hammer engagement surfaces, with or without the CZ 452 Trigger Spring Kit / CZ 455 Trigger Spring Kit . Before installing please be sure to check all local state and federal laws. By installing this part you agree to take full responsibility for any and all legal, health and warranty consequences that may be incurred.

Q: Will the CZ 452 / 455 Trigger Spring Kit work for my CZ BRNO Model 2E

A: Yes it will work for the CZ BRNO Model 2E

This Kit will fit the:   CZ 452, CZ 455, CZ BRNO Model 2E

Will not fit the:  CZ 457

Overall Customer Rating of 99 Reviews:

Makes it even better

Simple installation. My CZ 452 limited edition went from 3.5 pounds to 1.5. I was skeptical but it actually works.


Very Happy

I was able to perform the trigger upgrade thanks to the great video produced by M Carbo. Instructions were clear, complete & much better than other half ass videos found on U tube. Cost of the part was very reasonable. Shipment was extremely fast & I even got a brake on shipping charges ! Couldn't ask for anything more. I'm very happy with the way the trigger upgrade turned out.


CZ 455 Trigger Spring Kit

Fast shipping appreciated. Trigger spring install video accurate and helpful. Spring reduced pull weight as advertised. Note: This spring does not correct the creep that happens randomly with my CZ 455 trigger. Overall I am still pleased with the upgrade.

Great Product, fast shipping!

Great product and awesome customer service! Installation video was super helpful. Highly recommended.


Trigger Spring CZ455 Trainer:

I found it very easy to install and it worked fine. Previously I had adjusted the trigger to as light as it would go which was 2 1/2 pounds; not bad, but I wanted it lighter. The new spring brought it down to 1 1/2 pounds and now it feels real good. I did think that $12 was a little high for the spring, but it works as advertised.