PETE'S PILLARS | PRECISION CZ RIMFIRE COMPONENTS
Eight Ounces. Your Factory CZ 457 Trigger.
Keep the CZ 457 factory trigger you know and build toward a true 8 oz pull. The Pete's Pillars PP457-08-SP is our USA-made 8 oz trigger spring, developed for shooters who want a lighter competition-focused pull from a properly tuned factory trigger assembly.
The factory CZ 457 trigger gives rimfire shooters a solid starting point. Our 8 oz Trigger Spring takes a focused approach to refining it: change the spring, retain the factory trigger assembly, and let good trigger tuning bring the complete setup into its intended pull-weight range. With over six years of CZ rimfire experience behind our parts, Pete's Pillars makes this spring for shooters who care about the details of their rifle.
The spring has a 5.2 lb/in rate, compared with approximately 48 lb/in for the original CZ 457 spring. That difference gives a properly prepared factory trigger the potential for an 8-ounce pull. It is a purposeful component for a precision rimfire build, not a requirement to replace the entire trigger.
8 oz Performance Without Replacing the Whole Trigger
Whether you're building a CZ 457 for benchrest, NRL22, PRS Rimfire, or other precision shooting, trigger feel is personal. Some shooters choose complete replacement assemblies from JARD or Timney. Others prefer to keep the original CZ 457 trigger and refine that platform. PP457-08-SP is built for the second approach: an 8 oz spring for a factory assembly that has been properly tuned and evaluated.
The spring itself is straightforward; achieving a finished trigger pull is a matter of the complete trigger's condition and professional setup. That distinction matters when you're working in the single-digit-ounce range, where proper function is as important as the number on the pull gauge.
Choose Your Trigger Spring, Then Build Around It
Looking for a little more pull resistance? Our PP45712SP 12 oz Trigger Spring offers another USA-made choice for the factory CZ 457 trigger. For a more complete CZ bolt refresh, explore our PP457FP OEM-Style Firing Pin, PP457FP-T Reshaped-Tip Firing Pin, and PP457LCI Extended Stainless Cocking Indicator.
Building out the rifle as well? The MDT Field Stock and KRG Bravo offer familiar stock-style ergonomics, while the MDT LSS Gen3 Competitor, MDT ACC Premier Gen2, and flagship MDT ACC Elite support dedicated competition builds. Find them alongside our own manufactured upgrades in the CZ 457 Parts & Upgrades Collection.
Product Specifications
Manufacturer: Pete's Pillars
Part Number: PP457-08-SP
Product: 8 oz Aftermarket Trigger Spring
Application: CZ 457 Factory Trigger Assembly
Target Pull Weight: 8 oz with Proper Trigger Tuning
Spring Rate: 5.2 lb/in
Factory Spring Rate: Approximately 48 lb/in
Other CZ Models: Not for CZ 452, 453, or 455 Triggers
Aftermarket Trigger Assemblies: Not Designed for Timney or JARD Trigger Units
Includes: One Trigger Spring
Manufactured: USA
Frequently Asked Questions
8 oz pull potential, choosing between spring rates, and factory CZ 457 trigger compatibility.
Can I really get an 8 oz pull from the factory CZ 457 trigger?
Yes. An 8-ounce pull is achievable with the PP457-08-SP in a properly tuned factory CZ 457 trigger. The measured pull comes from the complete trigger assembly, so the condition and professional setup of that assembly matter.
Will swapping the spring alone give me exactly 8 ounces?
Not automatically. This is our 8 oz spring, but the final pull depends on the factory trigger's condition and tuning. If you're chasing an exact competition weight, have a qualified gunsmith set up and verify the completed trigger.
Should I choose the 8 oz or 12 oz Pete's Pillars spring?
Choose the 8 oz version when you're aiming for a very light, competition-focused factory trigger. Choose our 12 oz spring if you prefer a little more resistance. Both are made for the CZ 457 factory trigger; the finished pull depends on the individual rifle.
How is this different from a JARD or Timney CZ 457 trigger?
JARD and Timney offer complete replacement trigger systems. PP457-08-SP is a spring for the original CZ 457 trigger assembly. If you like the factory trigger and want an 8 oz option after proper tuning, this is the Pete's Pillars route.
Does it work in Timney, JARD, or older CZ 452/455 triggers?
No. This spring is for the factory CZ 457 trigger assembly. It is not intended for complete aftermarket trigger units or the earlier CZ 452, 453, and 455 trigger systems.
Who should tune an 8 oz trigger?
A qualified gunsmith. Eight ounces is a specialized, very light pull, and the completed trigger needs to be checked for safe, reliable function rather than judged by pull weight alone.
What's in the package?
One USA-made Pete's Pillars PP457-08-SP trigger spring. The factory trigger assembly and other trigger components are not included. The 12 oz spring is offered separately.
Over six years of CZ rimfire experience. Precision parts made in the USA.
Pete's Pillars. Small Change. Big Impact.
