MDT CZ 457 LSS Gen3 Worker Chassis – Black
The MDT LSS Gen3 Worker 115020-BLK gives the CZ 457 a compact, modular aluminum chassis built for shooters who want precision-rifle capability without the size and weight of a dedicated competition setup.
Configured with the shorter LSS Gen3 forend, comfortable polymer side panels, and MDT's adjustable CCS Composite Carbine Stock, the Worker is designed around portability, practical handling, and everyday usability.
It is a strong fit for rimfire hunting, field rifles, compact precision builds, training rifles, and general-purpose CZ 457 setups.
Build Out Your CZ 457
Built Specifically for the CZ 457
The 115020-BLK is configured for the right-hand CZ 457.
The LSS Gen3 center section provides a rigid aluminum foundation for the CZ action while retaining the rifle's factory rimfire magazine system.
Whether you are starting with a CZ 457 Varmint, Pro Varmint, MTR, or another compatible configuration, the Worker provides a modern chassis foundation without forcing the rifle into a full competition format.
The Field-Oriented LSS Gen3
The Worker configuration takes a different approach than the LSS Gen3 Competitor.
Instead of a long, wide match forend and competition-focused rear stock, the Worker uses a shorter, slimmer forend and compact CCS buttstock.
That keeps the rifle easier to carry, quicker to handle, and more practical for field use while retaining the modularity of the LSS Gen3 system.
6061 Aluminum Chassis Foundation
At the center of the system is a rigid 6061 aluminum chassis that supports the CZ 457 action.
The aluminum structure provides the stiffness expected from a modern precision chassis while giving the rifle a much more modular foundation than a traditional stock.
Compact LSS Gen3 Forend
The Worker uses the shorter LSS Gen3 forend to keep the rifle compact and easy to maneuver.
Polymer side panels create a comfortable gripping surface and help isolate the shooter's hand from temperature extremes associated with exposed aluminum.
The shorter profile makes the Worker particularly well suited to field rifles, compact barrel setups, rimfire trainers, and builds intended to be carried more than a dedicated match rifle.
M-LOK Accessory Mounting
The Worker provides M-LOK accessory mounting for bipods, sling hardware, accessory rails, and other compatible equipment.
That allows the rifle to remain simple when desired while still providing room for the accessories commonly used on hunting and precision rimfire builds.
MDT CCS Composite Carbine Stock
The Worker configuration uses MDT's CCS Composite Carbine Stock, combining adjustability with a compact and practical footprint.
The stock features an adjustable cheek riser and spacer-adjustable length of pull, allowing the rifle to be fitted around the shooter and optic rather than forcing the shooter to adapt to a fixed stock.
Adjustable Shooter Fit
The CCS stock provides adjustable cheek height and length of pull for a more consistent shooting position.
That is especially useful on CZ 457 rifles equipped with larger optics, taller rings, or used as precision trainers where repeatable head position matters.
Factory CZ 457 Magazine System
The CZ 457 Worker retains the factory CZ rimfire magazine system.
It does not convert the rifle to centerfire AICS magazines.
Shooters can continue using compatible CZ 457 factory-pattern magazines while gaining the modularity, ergonomics, and accessory mounting of the LSS Gen3 chassis.
Built for Rimfire Hunting
The Worker configuration is particularly well suited to CZ 457 rifles being used for small-game hunting, pest control, and general field use.
The compact forend keeps the rifle easy to carry, the adjustable stock helps establish a consistent shooting position, and the M-LOK interface provides room for a bipod or sling without unnecessary bulk.
Precision Trainer & Range Rifle
The Worker also makes an excellent foundation for a precision rimfire trainer.
Its chassis-style ergonomics, adjustable cheek height, adjustable length of pull, and modular accessory system allow shooters to build a CZ 457 that mimics many of the handling characteristics of a centerfire precision rifle.
That makes it useful for positional practice, fundamentals training, recreational long-range rimfire, and general range use.
LSS Gen3 Modularity
Although the Worker starts as a compact field-oriented configuration, it remains part of the LSS Gen3 modular ecosystem.
Compatible forends, stocks, grips, and accessories can be changed as the rifle's role evolves.
A rifle that begins as a lightweight field build can later move toward a more competition-oriented setup without abandoning the central chassis system.
Worker vs. Competitor
The LSS Gen3 Worker and LSS Gen3 Competitor share the same modular design philosophy but are built around different priorities.
The Worker emphasizes compact size, portability, simplicity, and field handling.
The Competitor uses a longer, wider forend and more match-oriented equipment for PRS Rimfire, NRL22-style, and positional competition.
Why Purchase from Pete's Pillars
Pete's Pillars is an authorized MDT dealer with extensive experience supplying parts for CZ 457 and precision rimfire builds.
We stock the chassis systems, rails, bolt components, springs, replacement parts, bipods, and accessories needed to build around the CZ 457 platform.
Product Details
- Manufacturer: MDT
- Product Line: LSS Gen3
- Configuration: The Worker
- Part Number: 115020-BLK
- Platform: CZ 457
- Handedness: Right Hand
- Color: Black
- Chassis Material: 6061 Aluminum
- Magazine Compatibility: Factory CZ 457 Rimfire Magazines
- Forend: Compact LSS Gen3 Worker Forend
- Forend Panels: Polymer
- Accessory Interface: M-LOK
- Buttstock: MDT CCS Composite Carbine Stock
- Cheek Riser: Adjustable
- Length of Pull: Spacer Adjustable
- Intended Use: Hunting, Field Use, Training and Recreational Precision Shooting
Rifle, barreled action, optic, magazine, bipod, and other accessories are not included unless specifically stated with the product configuration.
Pete's Pillars is an authorized MDT dealer.
