CZ 452 / CZ 455 Trigger Spring Upgrade – Improved Trigger Feel & Reduced Pull Weight

Transform the feel of your CZ rimfire rifle with the HVHA Trigger Spring Upgrade, one of the simplest and most effective modifications available for improving trigger performance.

Designed for CZ 452, CZ 455 and compatible BRNO rifles, this precision-engineered stainless steel trigger spring reduces factory trigger pull weight from approximately 4lbs to around 1.5lbs, providing a lighter, smoother and more predictable trigger break while retaining the original factory trigger system.

Whether you’re hunting, target shooting or building a precision rimfire rifle, a lighter trigger helps improve shot control, reduce shooter-induced movement and maximise the rifle’s accuracy potential.

Why Upgrade Your Factory Trigger Spring?

Factory trigger pull weights are often heavier than many shooters prefer.

Replacing the factory spring provides:

• Reduced trigger pull weight
• Cleaner trigger break
• Improved trigger consistency
• Better shot control
• Greater shooting confidence
• Cost-effective performance improvement
• Retains factory trigger reliability

It’s one of the highest-value upgrades you can make to your CZ rimfire rifle.

Built for Reliable Performance

Manufactured from premium stainless steel, the HVHA Trigger Spring is engineered for long-term durability and dependable performance.

Unlike complete trigger replacement systems, this upgrade enhances the existing factory trigger while maintaining its original design and reliability.

Installation is straightforward and typically takes less than 30 minutes.

Compatibility

Compatible with:

• CZ 452
• CZ 455
• BRNO Model 2
• BRNO Model 4
• BRNO Model 5

Please confirm compatibility before ordering.

What’s Included

• 1 × Precision Stainless Steel Trigger Spring

Recommended Upgrades

Complete your CZ build with:

• CZ Bottom Metal
• CZ Extended Magazine Release
• CZ Magazine Well Block
• CZ Bore Cleaning Guide
• CZ Picatinny Rail
• CZ Bolt Protector

Frequently Asked Questions

Will this fit my CZ rifle?

It is designed to suit CZ 452, CZ 455, BRNO Model 2, Model 4 and Model 5 rifles.

How much does it reduce trigger pull weight?

Most rifles experience a reduction from approximately 4lbs to around 1.5lbs, although results may vary between individual rifles.

Does this replace the entire trigger?

No. It replaces only the factory trigger spring while retaining the original trigger assembly.

Is installation difficult?

Installation is generally straightforward and can usually be completed in under 30 minutes. Professional installation is recommended if you are unfamiliar with trigger systems.

Can I return the rifle to standard?

Yes. The modification is fully reversible by reinstalling the factory spring.