POSITION7 CZ 457 BILLET ALUMINUM MAGWELL KIT
A Stronger Magwell. A More Confident Magazine Change.
The Position7 CZ 457 Magwell Kit replaces the original polymer magazine-well assembly with a tightly machined 7075 aluminum system. Its guided magazine opening and separate ejector insert bring precision construction to a part that sees constant handling on a working .22 LR rifle. Choose a full kit with extended release or the magwell-and-ejector configuration to suit your build.
The factory CZ 457 magazine well does its job, but it is also one of the polymer parts shooters frequently revisit as a rifle sees hard use. Position7 approaches that assembly as a complete, engineered system: a bead-blasted, anodized aluminum body, shaped magazine-contact surfaces and an ejector insert that works with the magazine well rather than as an afterthought. Use it for: CZ 457 .22 LR precision builds, NRL22, PRS Rimfire, benchrest and restoring a worn factory assembly.
Machined for Engagement, Not Just Appearance.
Position7 machines its magwell components from high-strength 7075 aluminum, with deliberate chamfers and closely controlled internal dimensions to guide the magazine as it enters the action. The separate ejector insert has a shaped ramp and performs its normal ejection function. The goal is a positive magazine catch and a clean release, with minimal free play when paired with an in-spec magazine. A worn or out-of-spec magazine may still need attention; the tighter fit is intentional, not a promise that every magazine will behave identically.
Choose the Configuration That Fits Your Rifle.
The Full Magwell Kit includes the aluminum magwell and ejector insert along with Position7's extended aluminum magazine release lever, upgraded release spring, stainless pivot pin and steel T10 Torx assembly screws. Position7 supplies that full assembly preassembled. The Magwell and Ejector Only variant is intended for shooters retaining a compatible existing release lever and spring. Both left-handed and right-handed variants exist, and the ejector must match the rifle's handedness. Select the actual variant you need before ordering.
The kit is specified for CZ 457 rifles in .22 LR, not .17 HMR or .22 WMR. Position7 lists MDT CZ 457 chassis and the KRG Bravo among its tested options, along with several others. Some aftermarket bottom-metal designs and chassis openings have different clearances: L3i bottom metal, MPA Vanquish side-release arrangements and certain alternate release positions are not interchangeable without changes. Match the magwell and release to the complete chassis setup, not just the rifle model.
Our Take • Another Route
Not Replacing the Entire Magwell?
Position7 is a well-made option when you want the complete magazine-well assembly. If your original magwell is staying and the project is its polymer magazine spacer block, our PP457SR radiused 6061 aluminum spacer offers a wider magazine lead-in. Prefer the factory-style squared profile? Our PP457SB spacer block is another option. These are alternative upgrades for a different component, not additional pieces required for the Position7 full kit.
See the PP457SR →Pair It With.
Finish the magazine side of the rifle with a quality .22 LR magazine, then turn to the bolt and controls. Because Position7 machines close-fitting magazine surfaces, verify individual magazine engagement and release rather than assuming every aftermarket magazine has exactly the same dimensions.
Position7 CZ 457 10-Round MagazineBillet aluminum .22 LR option
PP457FP-T Reshaped Firing PinOur nitrided tool-steel upgrade
PP457LCI Cocking IndicatorExtended stainless replacement
Made in USA by Pete's Pillars
Complete the Bolt Refresh
The small parts that complete your CZ 457 project.
Made in USAPete's PillarsPP457FP-T Reshaped Firing PinThe CZ 457 part we are known for.Shop Now →
Made in USAPete's PillarsPP457LCI Cocking IndicatorExtended stainless, replacing factory plastic.Shop Now →
Made in USAPete's PillarsPP457ES Extractor & HolderFinish the extractor assembly refresh.Shop Now →
Made in USAPete's PillarsPP457SP2 Gen 2 SpringA fresh spring for the extractor and holder.Shop Now →
Made in USAPete's PillarsPP4KG Billet Bolt KnobSlim, grooved and knurled aluminum.Shop Now →
Made in USAPete's PillarsPPFG-L XL Bolt KnobFinger-groove alternative for your bolt.Shop Now →Build the Rifle Around It
Pair It With a Match Barrel
Our barrels first, plus carefully chosen match options.
Made in USAPete's PillarsPP457-22S Stainless Match Barrel22″ .960 unthreaded match profile.Shop Now →
Made in USAPete's PillarsPP457-22ST Match Barrel22″ .960 stainless, threaded.Shop Now →
Made in USAPete's PillarsPP457-26S Match Barrel26″ .960 stainless, unthreaded.Shop Now →
LiljaLilja CZ 457 .900 BarrelOne premium match-grade alternative.Shop Now →
L3iL3i CZ 457 24″ Match BarrelHeavy-contour .22 LR match option.Shop Now →
CZCZ 457 Varmint MTR Barreled ActionStart a chassis build with an MTR action.Shop Now →The Next Level: Build Around a Proven Chassis.
Make the Whole Rifle Work Together
MDT ACC Elite for the CZ 457
- A purpose-built competition chassis for your .22 LR platform.
- Balance, support and adjustability for match-day shooting.
- Pair it with your selected CZ 457 magazine system and an optic that fits the job.
Also see the MDT XRS CZ 457 or KRG Bravo CZ 457. Check exact mag-release and bottom-metal clearances for your configuration.
Did You Know?
Pete's Pillars Sells More Than Pillars.
From centerfire chassis to optics and reloading, outfit every rifle in the safe in one place.
Optics & Mounts
Bipods & Magazines
Product Specifications
Manufacturer: Position7
Manufacturer SKU: CZ457-MAGWELL-KIT
Platform: CZ 457
Caliber: .22 LR only
Material: CNC-machined 7075 aluminum
Finish: Bead-blasted, anodized
Handedness: Right-hand and left-hand options (select the correct variant)
Full Kit: Magwell, ejector insert, extended aluminum release, enhanced spring, stainless pivot pin, steel T10 Torx assembly fasteners
Alternative Kit: Magwell and ejector insert only; reuse a compatible existing release and spring
Origin: Position7, Czech Republic
Frequently Asked Questions
Kit contents, handedness, compatibility and finding the right upgrade.
What comes in the Position7 full magwell kit?
The full kit includes the 7075 aluminum magwell, matching ejector insert, extended aluminum magazine release lever, enhanced spring, stainless pivot pin and T10 Torx fasteners. Position7 supplies the full assembly preassembled.
Can I buy just the magwell and ejector?
Yes. The magwell-and-ejector-only configuration is an alternative variant and allows a compatible original release lever and spring to be retained. The full kit includes Position7's extended release hardware.
Does it fit my CZ 457 in .17 HMR or .22 WMR?
No. Position7 specifies this kit for CZ 457 rifles chambered in .22 LR. Do not assume compatibility with the magnum rimfire versions.
How do I choose right-handed or left-handed?
Choose the variant that matches your rifle. Position7 uses handed ejector inserts, and a right-hand ejector insert is not correct for a left-hand action.
Will it work in an MDT chassis or KRG Bravo?
Position7 identifies MDT CZ 457 chassis systems and KRG Bravo among its tested configurations. Exact release clearance can depend on your chassis, bottom metal and chosen kit variant.
What about L3i bottom metal or MPA Vanquish?
Position7 reports that L3i bottom metal is not compatible without modification. The MPA Vanquish side-release arrangement also has special restrictions. Confirm the whole component combination with the manufacturer before ordering.
Should I choose this full kit or a Pete's Pillars magwell spacer?
Both are quality options for different jobs. Position7 replaces the magwell assembly. Our PP457SR radiused spacer and PP457SB squared spacer upgrade the separate factory spacer block when you are retaining the existing magwell. We are partial to our USA-made parts, but the Position7 full kit is a well-engineered assembly.
Pete's Pillars is an authorized Position7 dealer.
Small Change. Big Impact. Pete's Pillars.
POSITION7 CZ 457 BILLET ALUMINUM MAGWELL KIT
A Stronger Magwell. A More Confident Magazine Change.
The Position7 CZ 457 Magwell Kit replaces the original polymer magazine-well assembly with a tightly machined 7075 aluminum system. Its guided magazine opening and separate ejector insert bring precision construction to a part that sees constant handling on a working .22 LR rifle. Choose a full kit with extended release or the magwell-and-ejector configuration to suit your build.
The factory CZ 457 magazine well does its job, but it is also one of the polymer parts shooters frequently revisit as a rifle sees hard use. Position7 approaches that assembly as a complete, engineered system: a bead-blasted, anodized aluminum body, shaped magazine-contact surfaces and an ejector insert that works with the magazine well rather than as an afterthought. Use it for: CZ 457 .22 LR precision builds, NRL22, PRS Rimfire, benchrest and restoring a worn factory assembly.
Machined for Engagement, Not Just Appearance.
Position7 machines its magwell components from high-strength 7075 aluminum, with deliberate chamfers and closely controlled internal dimensions to guide the magazine as it enters the action. The separate ejector insert has a shaped ramp and performs its normal ejection function. The goal is a positive magazine catch and a clean release, with minimal free play when paired with an in-spec magazine. A worn or out-of-spec magazine may still need attention; the tighter fit is intentional, not a promise that every magazine will behave identically.
Choose the Configuration That Fits Your Rifle.
The Full Magwell Kit includes the aluminum magwell and ejector insert along with Position7's extended aluminum magazine release lever, upgraded release spring, stainless pivot pin and steel T10 Torx assembly screws. Position7 supplies that full assembly preassembled. The Magwell and Ejector Only variant is intended for shooters retaining a compatible existing release lever and spring. Both left-handed and right-handed variants exist, and the ejector must match the rifle's handedness. Select the actual variant you need before ordering.
The kit is specified for CZ 457 rifles in .22 LR, not .17 HMR or .22 WMR. Position7 lists MDT CZ 457 chassis and the KRG Bravo among its tested options, along with several others. Some aftermarket bottom-metal designs and chassis openings have different clearances: L3i bottom metal, MPA Vanquish side-release arrangements and certain alternate release positions are not interchangeable without changes. Match the magwell and release to the complete chassis setup, not just the rifle model.
Our Take • Another Route
Not Replacing the Entire Magwell?
Position7 is a well-made option when you want the complete magazine-well assembly. If your original magwell is staying and the project is its polymer magazine spacer block, our PP457SR radiused 6061 aluminum spacer offers a wider magazine lead-in. Prefer the factory-style squared profile? Our PP457SB spacer block is another option. These are alternative upgrades for a different component, not additional pieces required for the Position7 full kit.
See the PP457SR →Pair It With.
Finish the magazine side of the rifle with a quality .22 LR magazine, then turn to the bolt and controls. Because Position7 machines close-fitting magazine surfaces, verify individual magazine engagement and release rather than assuming every aftermarket magazine has exactly the same dimensions.
Position7 CZ 457 10-Round MagazineBillet aluminum .22 LR option
PP457FP-T Reshaped Firing PinOur nitrided tool-steel upgrade
PP457LCI Cocking IndicatorExtended stainless replacement
Made in USA by Pete's Pillars
Complete the Bolt Refresh
The small parts that complete your CZ 457 project.
Made in USAPete's PillarsPP457FP-T Reshaped Firing PinThe CZ 457 part we are known for.Shop Now →
Made in USAPete's PillarsPP457LCI Cocking IndicatorExtended stainless, replacing factory plastic.Shop Now →
Made in USAPete's PillarsPP457ES Extractor & HolderFinish the extractor assembly refresh.Shop Now →
Made in USAPete's PillarsPP457SP2 Gen 2 SpringA fresh spring for the extractor and holder.Shop Now →
Made in USAPete's PillarsPP4KG Billet Bolt KnobSlim, grooved and knurled aluminum.Shop Now →
Made in USAPete's PillarsPPFG-L XL Bolt KnobFinger-groove alternative for your bolt.Shop Now →Build the Rifle Around It
Pair It With a Match Barrel
Our barrels first, plus carefully chosen match options.
Made in USAPete's PillarsPP457-22S Stainless Match Barrel22″ .960 unthreaded match profile.Shop Now →
Made in USAPete's PillarsPP457-22ST Match Barrel22″ .960 stainless, threaded.Shop Now →
Made in USAPete's PillarsPP457-26S Match Barrel26″ .960 stainless, unthreaded.Shop Now →
LiljaLilja CZ 457 .900 BarrelOne premium match-grade alternative.Shop Now →
L3iL3i CZ 457 24″ Match BarrelHeavy-contour .22 LR match option.Shop Now →
CZCZ 457 Varmint MTR Barreled ActionStart a chassis build with an MTR action.Shop Now →The Next Level: Build Around a Proven Chassis.
Make the Whole Rifle Work Together
MDT ACC Elite for the CZ 457
- A purpose-built competition chassis for your .22 LR platform.
- Balance, support and adjustability for match-day shooting.
- Pair it with your selected CZ 457 magazine system and an optic that fits the job.
Also see the MDT XRS CZ 457 or KRG Bravo CZ 457. Check exact mag-release and bottom-metal clearances for your configuration.
Did You Know?
Pete's Pillars Sells More Than Pillars.
From centerfire chassis to optics and reloading, outfit every rifle in the safe in one place.
Optics & Mounts
Bipods & Magazines
Product Specifications
Manufacturer: Position7
Manufacturer SKU: CZ457-MAGWELL-KIT
Platform: CZ 457
Caliber: .22 LR only
Material: CNC-machined 7075 aluminum
Finish: Bead-blasted, anodized
Handedness: Right-hand and left-hand options (select the correct variant)
Full Kit: Magwell, ejector insert, extended aluminum release, enhanced spring, stainless pivot pin, steel T10 Torx assembly fasteners
Alternative Kit: Magwell and ejector insert only; reuse a compatible existing release and spring
Origin: Position7, Czech Republic
Frequently Asked Questions
Kit contents, handedness, compatibility and finding the right upgrade.
What comes in the Position7 full magwell kit?
The full kit includes the 7075 aluminum magwell, matching ejector insert, extended aluminum magazine release lever, enhanced spring, stainless pivot pin and T10 Torx fasteners. Position7 supplies the full assembly preassembled.
Can I buy just the magwell and ejector?
Yes. The magwell-and-ejector-only configuration is an alternative variant and allows a compatible original release lever and spring to be retained. The full kit includes Position7's extended release hardware.
Does it fit my CZ 457 in .17 HMR or .22 WMR?
No. Position7 specifies this kit for CZ 457 rifles chambered in .22 LR. Do not assume compatibility with the magnum rimfire versions.
How do I choose right-handed or left-handed?
Choose the variant that matches your rifle. Position7 uses handed ejector inserts, and a right-hand ejector insert is not correct for a left-hand action.
Will it work in an MDT chassis or KRG Bravo?
Position7 identifies MDT CZ 457 chassis systems and KRG Bravo among its tested configurations. Exact release clearance can depend on your chassis, bottom metal and chosen kit variant.
What about L3i bottom metal or MPA Vanquish?
Position7 reports that L3i bottom metal is not compatible without modification. The MPA Vanquish side-release arrangement also has special restrictions. Confirm the whole component combination with the manufacturer before ordering.
Should I choose this full kit or a Pete's Pillars magwell spacer?
Both are quality options for different jobs. Position7 replaces the magwell assembly. Our PP457SR radiused spacer and PP457SB squared spacer upgrade the separate factory spacer block when you are retaining the existing magwell. We are partial to our USA-made parts, but the Position7 full kit is a well-engineered assembly.
Pete's Pillars is an authorized Position7 dealer.
Small Change. Big Impact. Pete's Pillars.
| Brand | Position7 |
| Gun Platform | CZ 457 |
| Type | Magazine Well |