PETE'S PILLARS | PRECISION CZ RIMFIRE COMPONENTS
Twelve Ounces. Your Factory CZ 457 Trigger.
You don't have to replace a trigger you already like to pursue a lighter pull. Our USA-made PP45712SP 12 oz Trigger Spring gives CZ 457 shooters a focused upgrade for the factory trigger, with 12-ounce pull potential when the complete assembly is properly tuned.
The CZ 457 factory trigger is a solid platform for a precision rimfire build. Pete's Pillars makes the PP45712SP for shooters who want to bring that factory assembly into lighter-pull territory without switching to an entirely different trigger system. With over six years of CZ rimfire experience behind our parts, we build the small components that let you make a rifle your own.
This 12 oz spring has a 9.6 lb/in spring rate, compared with approximately 48 lb/in for the factory spring. In a properly tuned CZ 457 trigger, it can support pull weights of 12 ounces or less. Whether the rifle spends its time on the bench, at a rimfire match, or in the field, this is a direct way to pursue a lighter factory-trigger setup.
A Lighter Pull. The Factory Trigger You Already Know.
Some CZ 457 owners go straight to complete trigger replacements from JARD or Timney. Those are different approaches to the same larger goal: a trigger that suits the shooter. Our PP45712SP is for the shooter who wants to retain the factory CZ 457 trigger and refine it with a purpose-made spring.
The result depends on the whole trigger, not just the spring. A properly tuned assembly can reach the 12 oz range; a qualified gunsmith should verify the final pull and safe operation. That keeps the focus where it belongs: a crisp, predictable trigger you can shoot with confidence.
12 oz or 8 oz? Pick Your Preferred Feel.
Prefer a little more resistance than an ultra-light competition pull? PP45712SP is our 12 oz option. If you're chasing a lighter, single-digit-ounce setup, explore our PP457-08-SP 8 oz Trigger Spring. Both are USA-made choices for the original CZ 457 trigger, and both rely on proper tuning to reach their intended pull-weight range.
Complete Your CZ 457 Build
While you're updating the trigger, take a look at our PP457FP OEM-Style Firing Pin, PP457FP-T Reshaped-Tip Firing Pin, and PP457LCI Extended Stainless Steel Cocking Indicator. They're natural next stops for shooters refreshing the factory CZ bolt with Pete's Pillars-manufactured components.
Taking the rest of the rifle further? The MDT Field Stock and KRG Bravo deliver traditional stock-style handling. For a dedicated competition setup, explore the MDT LSS Gen3 Competitor, MDT ACC Premier Gen2, and flagship MDT ACC Elite. Find them alongside our USA-made parts in the Pete's Pillars CZ 457 Parts & Upgrades Collection.
Product Specifications
Manufacturer: Pete's Pillars
Part Number: PP45712SP
Product: 12 oz Aftermarket Trigger Spring
Application: CZ 457 Factory Trigger Assembly
12 oz Pull Potential: With Proper Trigger Tuning
Spring Rate: 9.6 lb/in
Factory Spring Rate: Approximately 48 lb/in
Other CZ Models: Not for CZ 452, 453, or 455 Triggers
Aftermarket Trigger Assemblies: Not for Timney or JARD Trigger Units
Includes: One Trigger Spring
Manufactured: USA
Frequently Asked Questions
12 oz pull potential, choosing between spring weights, and factory CZ 457 compatibility.
Can my factory CZ 457 trigger really reach 12 ounces?
Yes. A factory CZ 457 trigger with our PP45712SP spring can reach 12 ounces or less when it's properly tuned. The exact reading comes from the finished trigger assembly, so individual results depend on its condition and setup.
Will the spring alone give me exactly a 12 oz pull?
Not by itself. This is our 12 oz spring, but the trigger's overall condition and tuning determine its actual pull weight. A qualified gunsmith can check the completed setup and verify its operation.
Which should I buy: the 12 oz or 8 oz spring?
Choose PP45712SP when you want a light factory-trigger setup with a little more resistance. Choose our 8 oz version if you're after a particularly light competition pull. Both are designed around a properly tuned CZ 457 factory trigger.
How does this compare with a JARD or Timney trigger?
JARD and Timney make complete replacement trigger systems. PP45712SP is a spring for the factory CZ 457 trigger, so you can keep the original assembly and tailor its pull rather than replace the whole unit.
Will it fit a Timney, JARD, or CZ 452/453/455 trigger?
No. PP45712SP is made for the original CZ 457 trigger. It isn't intended for complete aftermarket trigger assemblies or the earlier CZ 452, 453, and 455 trigger designs.
Is a 12 oz trigger suitable for competition or field use?
It's an option for shooters building a light-pull precision CZ 457. Suitability depends on your shooting use and the completed trigger's safe, reliable function. Have a qualified gunsmith verify the setup before using it.
What comes with the PP45712SP?
One USA-made Pete's Pillars 12 oz trigger spring for the factory CZ 457 trigger assembly. The complete trigger unit and other parts are not included. Our 8 oz spring is available separately.
Over six years of CZ rimfire experience. Precision parts made in the USA.
Pete's Pillars. Small Change. Big Impact.
