Position7 CZ 455/457 .22 LR 10-Round Shorty Magazine
The Position7 CZ 457 Shorty is a 10-round .22 LR
magazine CNC-machined from aerospace-grade 7075
aluminum. Its design incorporates individual round-count
witness holes, a custom magazine spring, and a distinctive
internal cartridge arrangement that reduces the curvature
of the magazine body.
Developed with competitive precision rimfire shooting
in mind, the Shorty configuration combines a 10-round
capacity with the manufacturer's reduced-curvature
magazine geometry. It is intended for compatible
CZ 455 and CZ 457 .22 LR rifles.
Designed by a 2025 IPRF World Champion
The Position7 magazine was designed by Roman Konečný,
winner of the Senior Division at the 2025 IPRF PR22
World Championship in the United Kingdom.
According to Position7, the magazine underwent testing
involving thousands of rounds and was used by Konečný
during his championship-winning performance.
His championship result is documented by the
Czech Precision Rifle Association
.
10-Round Capacity and Individual Witness Holes
This Shorty model follows Position7's earlier 13-round
magazine design, offering a 10-round configuration
for markets and competition environments where
magazine capacity limits apply.
Each cartridge position has its own witness hole,
allowing the user to visually identify the number
of cartridges loaded into the magazine.
Magazine capacity regulations differ between
jurisdictions. Buyers remain responsible for
determining applicable legal restrictions.
Reduced-Curvature Magazine Geometry
One of the defining characteristics of the Position7
design is its internal cartridge arrangement.
Rather than relying on the more pronounced forward
curvature associated with some conventional
magazine profiles, Position7 uses a slightly angled
cartridge arrangement to achieve a straighter
external magazine body.
According to the manufacturer, this arrangement
reduces forward magazine projection and is intended
to improve clearance around chassis components,
barricade stops, and shooting bags.
Magazine Release Clearance
CZ 455 and CZ 457 magazine release levers are
located forward of the magazine. Magazine body
geometry can influence access to the release,
particularly within competition chassis systems.
Position7 developed its reduced-curvature geometry
with magazine-release accessibility in mind.
This consideration is particularly relevant to
rifles equipped with close-fitting chassis
magazine cavities.
7075 Billet Aluminum Construction
The magazine body is CNC-machined from 7075 aluminum,
a high-strength aluminum alloy commonly used in
aerospace and precision-machined components.
Unlike polymer magazine bodies, billet aluminum
construction provides a metal-bodied magazine
configuration. Actual durability and long-term
service performance depend on the complete
component design and operating conditions.
Materials and Components
- Magazine Body: CNC-machined 7075 aluminum
- Fasteners: Steel small-head Torx screws, included
- Magazine Spring: Custom spring
- Cartridge Inspection: Individual witness holes
- Capacity: 10 rounds of .22 LR
CZ 455/457 and Competition Chassis Compatibility
Position7 reports compatibility testing with
factory CZ rifles and multiple aftermarket
precision rifle chassis configurations.
Manufacturer-Reported Tested Compatibility
- Factory CZ rifle configurations
- MDT CZ 457 chassis systems
- Vision chassis
- Rome chassis
- MPA Vanquish chassis
Factory rifle examples identified by Position7
include LRP, American, Varmint, and MTR
configurations, including MDT-equipped models.
These are manufacturer-reported compatibility
claims. Individual rifle configurations,
magazine catches, magwells, and chassis
manufacturing variations can affect fitment.
Aftermarket Magwells and L3i Compatibility
Position7 recommends its aluminum magwell kit
when using its billet aluminum magazines.
Other aftermarket magazine well assemblies,
including those manufactured by L3i and
additional CZ 457 accessory manufacturers,
may have different dimensions and magazine
catch arrangements.
Specific compatibility between the Position7
Shorty magazine and L3i magwell configurations
has not been independently confirmed for
this listing.
Important Factory Polymer Magwell Notice
Position7 cautions that using aluminum
magazines can increase the likelihood of
cracking in the original CZ 457 polymer
magazine well.
The manufacturer recommends an aluminum
magwell for competition applications.
This warning is reproduced as manufacturer
guidance and should be considered when
evaluating the existing rifle configuration.
Position7 CZ 457 Shorty Magazine Specifications
- Manufacturer: Position7
- Product: CZ 455/457 Shorty Magazine
- Part Number: CZ457-MAG-10RD-SHORTY
- Caliber: .22 Long Rifle (.22 LR)
- Capacity: 10 Rounds
- Magazine Body: 7075 Billet Aluminum
- Manufacturing: CNC Machined
- Spring: Custom Magazine Spring
- Fasteners: Steel Small-Head Torx Screws
- Witness Holes: Individual Cartridge Positions
- Design: Reduced-Curvature Body Geometry
- Platforms: Compatible CZ 455/457 .22 LR Configurations
Frequently Asked Questions
Who designed the Position7 CZ 457 Shorty magazine?
The magazine was designed by Roman Konečný,
the 2025 IPRF PR22 Senior Division World
Champion. Position7 reports testing the design
with thousands of rounds before release.
What is different about the Position7 Shorty magazine geometry?
Position7 uses a slightly angled internal
cartridge arrangement to reduce the curvature
of the magazine body. According to the
manufacturer, this creates a straighter
profile and reduces forward projection
compared with more curved magazine designs.
Is the Position7 Shorty magazine made from 7075 aluminum?
Yes. Position7 identifies the body material
as CNC-machined aerospace-grade 7075 aluminum.
The magazine also incorporates steel Torx
fasteners and a custom spring.
Does the Position7 magazine work with MDT ACC chassis systems?
Position7 reports tested compatibility
with MDT CZ 457 chassis systems, including
competition configurations. Actual fitment
may depend on the specific chassis,
magwell, and magazine catch arrangement.
Does the Position7 magazine fit L3i CZ 457 magwells?
The manufacturer has not provided confirmed
L3i magwell compatibility data for this
listing. Compatibility should be verified
for the specific magwell and magazine
combination.
Why does Position7 recommend an aluminum magazine well?
Position7 warns that aluminum magazines
may increase the likelihood of cracking
in the original CZ 457 polymer magwell.
It recommends an aluminum magwell,
especially for competition applications.
What is the difference between the 10-round Shorty and 13-round model?
Both models belong to Position7's billet
aluminum CZ 457 magazine family. The
Shorty has a 10-round capacity, compared
with 13 rounds in the longer version.
Both use the manufacturer's distinctive
reduced-curvature magazine concept.
Does this magazine work with .17 HMR or .22 WMR?
This model is specified for .22 LR.
Compatibility with .17 HMR and .22 WMR
has not been established and should
not be assumed.
About Pete's Pillars
Pete's Pillars manufactures precision rifle
components in the USA and maintains a
catalog of parts and accessories from
established industry manufacturers,
including Position7.
This listing incorporates Position7's
manufacturer-provided design information
and compatibility guidance to help
CZ 455/457 owners evaluate the product
for their particular rifle configuration.
Real parts. Made by real people in the USA.
