MDT LSS Gen3 Worker Chassis System, CZ 457

• Action-specific fit for the CZ 457: This chassis is built around the CZ 457 platform, giving rimfire shooters a more rigid and repeatable foundation than a conventional stock. That helps support consistent bedding, steadier positional shooting, and easier setup for training or small-game use.
• Modular LSS Gen3 architecture: The MDT LSS Gen3 system uses a chassis base with interchangeable furniture interfaces, so the rifle can be configured around different shooting roles without replacing the core chassis. This makes it easier to adapt the rifle for hunting, practice, or general field use.
• AR-style grip and carbine interface: Compatibility with AR-15 style grips and a carbine buttstock interface gives the shooter broad freedom to tune grip angle, length of pull, and rear support. In practice, that means a more natural shooting position and better control from improvised rests or supported positions.
• M-LOK forend for accessory mounting: The M-LOK forend provides a straightforward way to add practical accessories such as bipods, sling mounts, or barricade supports. This keeps the rifle adaptable while avoiding unnecessary bulk where no accessories are needed.
• Aluminium construction with generous barrel clearance: The aluminium chassis combines low-maintenance durability with a 31.75 mm maximum barrel diameter capacity, allowing the system to accept heavier rimfire barrel profiles. That is useful for shooters who want a stable platform for precision-oriented builds.

About the MDT LSS Series

The MDT LSS series is built around a modular chassis concept that gives bolt-action rifles a more adaptable layout than a traditional stock. In its Gen3 form, the series is aimed at shooters who want one platform that can cover competition, hunting, tactical applications, and general shooting without forcing a permanent configuration. The core idea is an action-mating chassis base paired with interchangeable handguards and buttstock interfaces, allowing the rifle to be tailored to the job while keeping the same central structure.

A defining trait of the series is its use of AR-style grip compatibility and an ambidextrous magazine latch, which make the platform familiar to many modern rifle shooters and easier to run from either shoulder. MDT also designed the system so that handguards and buttstocks can be changed without affecting rifle zero, an important practical advantage for shooters who want to reconfigure a rifle without disturbing its established setup. Within MDT’s lineup, the LSS series sits as a versatile chassis family that emphasizes modularity, practical ergonomics, and straightforward adaptation across different shooting disciplines.

About the MDT LSS Gen3 Worker Chassis System, CZ 457

The MDT LSS Gen3 Worker Chassis System for CZ 457 gives the popular rimfire action a more structured and configurable platform for general shooting and hunting. Its main strength is not a single add-on feature, but the way the chassis changes how the rifle handles: the action sits in a rigid aluminium structure, while the external interfaces let the shooter build the rifle around preferred furniture and support equipment. For a CZ 457 used as a trainer, field rimfire, or precision-oriented small-game rifle, that creates a more stable starting point for repeatable shooting.

The chassis uses a carbine buttstock interface and accepts AR-15 style grips as well as MDT pistol grips, which opens up meaningful ergonomic adjustment. Grip shape and angle have a direct effect on trigger reach and wrist position, especially in prone or supported shooting, so this compatibility is more than a convenience. The M-LOK forend adds the same kind of practical flexibility at the front of the rifle, making it easier to mount a bipod, sling hardware, or other accessories suited to the rifle’s role.

With a 305.00 mm forend length and clearance for barrels up to 31.75 mm in diameter, the chassis also suits heavier-profile rimfire builds that benefit from added stiffness and front-end support. At 1750.00 g and 685.00 mm overall length, it is substantial enough to give the rifle a planted feel, while remaining appropriate for shooters who want a fixed, non-folding chassis with broad accessory compatibility and direct support for CZ 457 magazines.

About MDT

MDT Sporting Goods was established in 2009 and began in Chilliwack, British Columbia, Canada. The company focuses on products for target shooting and hunting, with a range that includes rifle chassis systems, magazines, buttstocks, bipods, scope bases, and scope rings. MDT identifies the TAC21 as its first chassis, and that early emphasis on chassis design still defines the brand today.

MDT states that its chassis, magazines, and accessories are developed with input from competitive precision shooters, which helps explain the company’s strong presence in precision-rifle equipment. Its products are designed around modularity, repeatable fit, and practical rifle setup rather than traditional stock design alone. For shooters looking at a chassis system such as the LSS Gen3, MDT’s reputation is tied to purpose-built rifle support hardware and a product line centered on configurable shooting platforms.

Main Features

• Manufacturer: MDT
• Chassis Series: MDT LSS
• Made in: Canada
• In production since: 2025
• Material: Aluminium
• Weight: 1750.00 g
• Length: 685.00 mm
• Forend Length: 305.00 mm
• Forend Type: M-Lok
• Buttstock Interface: Carbine Interface
• Max. Barrel Diameter: 31.75 mm
• Foldable: No
• Application: General, Hunting
• Magazine Compatibility: CZ 457 Magazine Compatible
• Grip Compatibility: AR-15 Style Grips, MDT Pistol Grips

Warranty

2 years. MDT lists this chassis system with a 2-year warranty, covering the product for a clearly stated period from purchase.