CZ 455 / CZ 457 / CZ 512 Magazine Well Block

Replace the factory plastic magazine well block on your CZ rifle with a premium CNC-machined aluminium upgrade engineered for improved durability, smoother magazine operation and long-term reliability.

Designed specifically for CZ 455, CZ 457 and CZ 512 .22LR right-hand rifles, the HVHA Magazine Well Block provides a stronger and more durable alternative to the factory polymer component. Manufactured from 6061-T6 aircraft-grade aluminium and finished in a hard-anodised matte black coating, it delivers exceptional strength, corrosion resistance and a premium factory-style appearance.

Whether you’re replacing a worn factory part or upgrading your rifle with higher-quality components, this magazine well block provides dependable performance for hunting, target shooting and precision rimfire applications.

Why Upgrade Your Factory Magazine Well Block?

Factory polymer components can wear, warp or become damaged over time, affecting magazine fitment and overall reliability.

Replacing the original component with a precision-machined aluminium magazine well block provides:

• Improved strength and durability
• Smoother magazine insertion and removal
• Enhanced long-term reliability
• Better resistance to wear and impact
• Premium aluminium construction
• Improved fit and finish

It’s a simple upgrade that improves both the feel and longevity of your rifle.

Precision Engineered for Reliable Performance

Every HVHA Magazine Well Block is CNC machined from a solid billet of 6061-T6 aircraft-grade aluminium before receiving a durable hard-anodised matte black finish.

This ensures:

• Exceptional dimensional accuracy
• Consistent magazine fitment
• Excellent corrosion resistance
• Lightweight construction
• Long service life

Designed to work seamlessly with both OEM and HVHA-compatible magazine wells, it delivers reliable performance in demanding conditions.

Compatibility

Compatible with:

• CZ 455 (.22LR Right-Hand)
• CZ 457 (.22LR Right-Hand)
• CZ 512 (.22LR Right-Hand)

Compatible with OEM and HVHA magazine wells.

Please verify compatibility before ordering.

What’s Included

• CZ Aluminium Magazine Well Block
• Stainless Steel Retaining Pin

Recommended Upgrades

Complete your CZ rifle with:

• CZ Extended Magazine Release
• CZ 457 Bottom Metal
• CZ Bore Cleaning Guide
• CZ Trigger Spring Kit
• CZ Picatinny Rails

Frequently Asked Questions

Will this fit all CZ 457 rifles?

This magazine well block is designed for right-hand CZ 455, CZ 457 and CZ 512 rifles chambered in .22LR.

Why replace the factory plastic component?

The aluminium construction provides significantly greater durability, improved wear resistance and more consistent magazine operation than the factory polymer component.

Is it CNC machined?

Yes. Every HVHA Magazine Well Block is precision CNC machined from 6061-T6 aircraft-grade aluminium.

Is the retaining pin included?

Yes. A precision stainless steel retaining pin is supplied with every kit.

Will it work with my factory magazine?

Yes. It is designed for compatibility with OEM magazine wells and magazines as well as HVHA-compatible components.