Position7 CZ 455/457 .22 LR 13-Round Billet Aluminum Magazine
The Position7 CZ 457 13-Round Magazine is a CNC-machined
billet aluminum magazine designed for compatible
CZ 455 and CZ 457 rifles chambered in .22 Long Rifle.
Manufactured from aerospace-grade 7075 aluminum,
it incorporates a distinctive reduced-curvature
magazine body, individual cartridge witness holes,
and a custom 13-round magazine spring.
Developed for precision rimfire competition,
the magazine's geometry was designed with
particular attention to magazine-release access
and clearance around competition chassis components.
Its construction and layout distinguish it from
conventional polymer-bodied CZ magazines.
Designed by a World Champion
According to Position7, this magazine was designed
by Roman Konečný, the 2025 IPRF PR22 World Champion
in the Senior Division.
Position7 reports that the design was tested with
thousands of rounds and was used during Konečný's
championship-winning performance.
The manufacturer's development history provides
useful context for the design's emphasis on
magazine geometry, handling, and competition
chassis compatibility.
13-Round Capacity and Individual Witness Holes
This model has a stated 13-round .22 LR capacity.
Position7 designed the magazine around the
cartridge-capacity requirements commonly encountered
in precision rimfire competition.
Individual witness holes correspond to each
cartridge position, providing a visual reference
for the number of rounds loaded.
The manufacturer also lists a configuration
with a 10-round limiter. Available capacity
options and applicable restrictions should be
verified for the specific magazine variant.
Innovative Reduced-Curvature Magazine Geometry
One of the most distinctive aspects of the
Position7 design is its internal cartridge
arrangement.
Rather than following a more pronounced
curved magazine profile, the cartridges
are arranged at a slight angle to reduce
the overall forward curvature of the body.
According to Position7, the resulting
straighter external profile is intended
to provide additional clearance around
shooting bags, barricade stops, and
close-fitting competition chassis.
Magazine Release Accessibility
On the CZ 455 and CZ 457 platforms, the
magazine release is located forward of
the magazine body.
With some extended magazine designs,
body curvature and chassis geometry
can limit access to the release.
Position7 developed its magazine profile
to address this consideration, particularly
in tight chassis cavities such as those
found on certain MDT ACC configurations.
CNC-Machined 7075 Aluminum Construction
The magazine body is manufactured from
7075 aluminum, a high-strength alloy
commonly used for precision-machined
mechanical components.
Position7 specifies a black hard-anodized
finish, steel small-head Torx fasteners,
and a custom magazine spring.
The combination of a machined metal body,
manufacturer-specific internal geometry,
and replaceable assembled components
distinguishes the design from many
conventional factory magazine constructions.
CZ 455/457 Rifle and Chassis Compatibility
Position7 publishes compatibility information
for factory CZ rifle configurations and
several aftermarket precision rifle chassis.
Manufacturer-Reported Tested Compatibility
- Factory CZ .22 LR rifle configurations
- CZ 457 LRP, American, Varmint, and MTR configurations
- MDT CZ 457 chassis systems
- Vision chassis
- Rome chassis
- MPA Vanquish chassis
These configurations are identified by
Position7 in its compatibility documentation.
Individual fitment may vary according to
magwell, magazine-catch, and chassis
configuration.
MPA Magazine Compatibility
Position7 identifies MPA compatibility
as a selectable product configuration.
Confirm that the particular magazine variant
matches the intended chassis and magwell
before use.
Aftermarket Aluminum Magwells
Position7 recommends pairing its billet
aluminum magazines with an aluminum magwell.
The manufacturer cautions that using aluminum
magazines with the original CZ 457 polymer
magazine well can increase the likelihood
of cracking.
Compatibility with individual aftermarket
assemblies, including specific L3i magwell
configurations, should be verified
independently.
Position7 13-Round Magazine Specifications
- Manufacturer: Position7
- Product: CZ 455/457 Billet Aluminum Magazine
- Manufacturer Product Family: CZ457-MAG
- Listing Reference: CZ457-MAG-MPA-13RD
- Caliber: .22 Long Rifle (.22 LR)
- Capacity: 13 Rounds
- Body Material: 7075 Billet Aluminum
- Manufacturing: CNC Machined
- Finish: Black Hard Anodized
- Spring: Custom 13-Round Magazine Spring
- Fasteners: Steel Small-Head Torx Screws
- Witness Holes: Individual Cartridge Positions
- Body Design: Reduced-Curvature Geometry
- MPA Compatibility: Variant Dependent
Frequently Asked Questions
Who designed the Position7 CZ 457 13-round magazine?
Position7 attributes the design to Roman
Konečný, the 2025 IPRF PR22 World Champion
in the Senior Division. According to the
manufacturer, the magazine underwent
testing involving thousands of rounds.
What caliber does the Position7 13-round magazine use?
This model is intended for .22 Long Rifle
(.22 LR) in compatible CZ 455 and CZ 457
rifles. Compatibility with .17 HMR and
.22 WMR has not been established.
What is different about the Position7 magazine geometry?
Position7 uses a slightly angled internal
cartridge arrangement to produce a
straighter external magazine profile.
The manufacturer states that this reduces
forward projection and improves clearance
around certain chassis components.
Is the Position7 magazine machined from 7075 aluminum?
Yes. The body is CNC-machined from
7075 aluminum. Position7 also lists
a black hard-anodized finish, steel
Torx fasteners, and a custom spring.
Does the Position7 magazine fit MDT ACC chassis systems?
Position7 reports tested compatibility
with MDT CZ 457 chassis systems,
including competition configurations.
Specific magazine variants, chassis
models, and magazine-catch arrangements
should be checked for fitment.
Is this magazine compatible with MPA Vanquish chassis?
Position7 lists the MPA Vanquish among
its tested chassis configurations.
MPA compatibility is also identified
as a selectable magazine variant,
so the exact version must be considered.
Will the Position7 13-round magazine fit an L3i magwell?
Specific compatibility with L3i
aftermarket magwells has not been
independently confirmed in this listing.
Check the exact component configuration
and manufacturer fitment specifications.
Why does Position7 recommend an aluminum magwell?
Position7 warns that using an aluminum
magazine may increase the likelihood
of cracking the original CZ 457
polymer magwell. The manufacturer
therefore recommends an aluminum
magwell, particularly for competition use.
What is the difference between the 13-round and 10-round Shorty versions?
Both models belong to Position7's
billet aluminum CZ 457 magazine family.
The primary published distinction is
capacity: 13 rounds for this model
and 10 rounds for the Shorty.
Both incorporate the manufacturer's
reduced-curvature design concept.
About Pete's Pillars
Pete's Pillars is an American manufacturer
of precision rifle components and a
retailer of products from established
industry manufacturers, including Position7.
We provide product specifications and
manufacturer compatibility information
to help customers identify the correct
components for their individual rifle
configurations.
Real parts. Made by real people in the USA.
