CZ 455 / 457 / 512 Radiused Aluminum Magazine Well Spacer Block
Make magazine insertion easier with the Pete's Pillars Radiused Aluminum Magazine Well Spacer Block for the CZ 455, CZ 457, and CZ 512.
Designed for .22 LR applications, the enlarged radiused opening provides a smoother lead-in around the magazine well, helping guide the magazine into position without requiring the same precise alignment as the factory-style spacer block.
It is a small change you notice every time you insert a magazine—whether you're shooting from the bench, working through magazines in competition, hunting, or loading the rifle while wearing gloves.
Radiused Opening for Easier Magazine Changes
The key difference is the shape of the magazine opening. Instead of duplicating the squared factory-style profile, the radiused version adds a smoother entry around the magazine well.
- Radiused magazine opening helps guide the magazine during insertion
- More forgiving alignment during magazine changes
- Useful for competition, bench shooting, hunting, and field use
- Easier to locate the magazine opening when wearing gloves
The radius does not change the basic operation of the CZ magazine system. It simply gives the magazine a more generous lead-in during insertion.
Billet 6061 Aluminum Replacement
Each spacer block is CNC machined from billet 6061 aluminum and finished in black anodizing for a durable replacement for the factory plastic component.
The rigid aluminum construction provides a consistent magazine-well interface without the material flex or deformation that can develop in a worn plastic spacer.
Small change. Less variation. More consistency.
Fits CZ 455, CZ 457 & CZ 512
Designed for compatible .22 LR CZ 455, CZ 457, and CZ 512 magazine applications.
This part replaces CZ factory part number 311233804014.
Looking for additional upgrades for your rifle? Browse our
CZ 457 Parts & Upgrades
page.
Bonus Stainless Retaining Pin Included
Each block includes a stainless steel retaining pin at no additional charge, giving you a fresh pin to use during installation instead of requiring the original pin to be reused.
Complete Your CZ Magazine Setup
Product Details
- Brand: Pete's Pillars
- Product: Radiused Magazine Well Spacer Block
- Platforms: CZ 455 / CZ 457 / CZ 512
- Application: .22 LR
- Material: Billet 6061 Aluminum
- Finish: Black Anodized
- Replaces CZ Part: 311233804014
- Included: Stainless Steel Retaining Pin
Installation requires basic mechanical or gunsmithing knowledge. Always verify that the firearm is completely unloaded before beginning installation.
Small change. Big convenience.
