Pete’s Pillars CZ 455 / 457 / 512 Billet Aluminum Magazine Well Block + Pin
Replace the factory plastic magazine well block with a durable billet aluminum upgrade designed for CZ 455, 457, and 512 rifles configured to allow your 457 17HMR or 22WMR for .22 LR. This block replaces the factory-style spacer used to properly position the .22 LR magazine while maintaining proper fit and function.
Each block is CNC machined from billet 6061 aluminum and finished in black anodizing for a clean, durable, low-maintenance finish.
The factory plastic magazine well spacer can wear, deform, or vary over time, introducing another variable into magazine positioning and cartridge presentation.
Our CNC-machined billet aluminum block provides a crisp, consistent fit with far less material variation than a worn plastic spacer. By helping maintain more repeatable magazine positioning, it removes one potential source of inconsistency from the feeding and extraction cycle.
A worn or distorted spacer is only one of several factors that can contribute to weak or unreliable extraction, but eliminating unnecessary movement and variation is a simple place to start.
Small change. Less variation. More consistency.
We also include a bonus stainless retaining pin at no additional charge for added convenience during installation.
Features:
- CNC machined from billet 6061 aluminum
- Black anodized finish
- Fits CZ 455, CZ 457, and CZ 512 ALL VARIANTS
- Designed for .22 LR magazine applications
- Replaces the factory plastic magazine well spacer block
- Bonus stainless retaining pin included at no additional charge
- Durable upgrade over the original plastic component
- Installation requires basic mechanical or gunsmithing knowledge
- Replaces CZ factory part number 311233804014
Complete Your CZ Setup
Pairs well with:
- Magazine well screws
- Barrel set screws
- CZ 455 / 457 pillar bedding kits
- Bottom metal and trigger guards
- Scope rails and mounts
- Bolt knobs
- Magazine components
- Other CZ 455 / 457 upgrades
Machined here. Made to last.
| Brand | Pete's Pillars |
| Gun Platform | CZ 457 |
| Material | Aluminum |