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The CZ 457 is one of the most popular bolt‑action rimfire rifles available today, widely chosen for its accuracy, modular design, and customization potential. Its predecessor, the CZ 455, helped establish that reputation and remains a platform many shooters are familiar with. Despite the popularity of these rifles, small replacement parts—especially extractor and ejector springs—can be difficult or inconsistent to obtain directly from the manufacturer. To address this, Pete’s Pillars manufactures this upgraded extractor/ejector spring as an aftermarket solution, providing reliable availability and improved performance.
This Pete’s Pillars–made spring is designed to replace the OEM component with a stronger, more consistent alternative to promote reliable ejection and longer service life. Pete’s Pillars has become known for producing quality, hard‑to‑find components, and also offers a wide range of upgrades for the CZ 457, other popular rimfire platforms, and chassis systems suited for competition, hunting, and recreational shooting.
Manufactured in the USA from black spring steel, this spring features no plating to flake or wear off. A light coat of oil is recommended for corrosion protection. The increased spring strength is intended to deliver more consistent ejection over extended use. Preliminary testing has shown several thousand cycles without failure. As CZ 457 actions can vary, extraction performance may differ between rifles, and user response is appreciated.
Compatibility
Designed primarily for CZ 455 and CZ 457 actions
Cross-references the current OEM CZ part 5080062201, which replaced an earlier OEM part number
May also fit CZ 452/453 rifles, though these were not available for testing and fitment is not guaranteed
References exist for BRNO452‑19 and PN38, but these part numbers are ambiguous and compatibility is uncertain
Installation Notes
Install by slipping one side of the spring into place, then the other
Do not over‑spread the spring during installation
Over‑spreading may permanently damage the spring and may not qualify for return
Installation should be performed by a qualified gunsmith or competent individual familiar with CZ bolt disassembly
Key Features
Aftermarket upgraded extractor/ejector spring manufactured by Pete’s Pillars
Made in the USA
Stronger replacement for OEM spring
Black spring steel construction with no plating to fail
Designed for consistent ejection and extended service life
Light oil recommended for corrosion protection
Preliminary testing shows thousands of cycles without failure
Designed for CZ 455 and CZ 457 actions
Possible fit for CZ 452/453; other references are ambiguous and not guaranteed
Pete’s Pillars product—known for quality, hard‑to‑find components, and rimfire upgrades
