MDT LSS Gen3 Chassis Base, CZ 457

• Modular Gen3 architecture: The action-mating chassis base is built around the MDT LSS Gen3 system, so the rifle can be configured with different handguards and buttstock interfaces to suit hunting, competition, tactical use, or general range work.
• Zero-preserving component changes: The LSS Gen3 platform is designed so handguards and buttstocks can be changed without affecting rifle zero, which makes it easier to adapt the rifle for different roles without reworking the setup.
• AR-style grip compatibility: Support for AR-15 style grips and MDT pistol grips lets the shooter tailor grip angle and hand position for better comfort and trigger control.
• CZ 457 magazine compatibility: Native compatibility with CZ 457 magazines keeps the rifle practical and straightforward to run, especially for shooters who already use the platform.
• Aluminium chassis construction: The aluminium body keeps weight to 998.00 g while providing the rigidity needed for a stable barreled action fit and consistent handling.

About the MDT LSS Series

MDT announced the LSS Gen3 chassis system on February 11, 2025 as a more modular evolution of the company’s compact chassis concept. The series is intended for competition, hunting, tactical applications, and general shooting, giving shooters a common base that can be adapted to very different rifle roles. Rather than treating the chassis as a fixed one-piece format, MDT built the system around an action-mating chassis base with interchangeable handguards and buttstock interfaces.

A key idea behind the MDT LSS Gen3 is flexibility without unnecessary disruption to the rifle setup. MDT states that handguards and buttstocks can be changed without affecting rifle zero, which is especially useful for shooters who want one rifle to cover field use, training, and match work. The series also accepts AR-style grips and uses an ambidextrous magazine latch, reinforcing its practical, user-configurable design. Within the lineup, MDT offers Competition, Hunting, and Tactical forend options, so the LSS Gen3 family is aimed at shooters who want a chassis system that can be tuned around handling preference, accessory needs, and intended use rather than locked into a single format.

About the MDT LSS Gen3 Chassis Base, CZ 457

The MDT LSS Gen3 Chassis Base, CZ 457 brings the Gen3 concept to the popular rimfire action in a format that emphasizes modularity and a clean starting point for a custom build. Because it is made specifically for the CZ 457 and is CZ 457 Magazine Compatible, it suits shooters building a rimfire rifle for training, practical field use, or precision-oriented competition where familiar controls and dependable magazine fit matter.

The chassis uses an aluminium construction and weighs 998.00 g, balancing rigidity with manageable overall rifle weight. That matters on a rimfire platform, where shooters often want a stable interface for positional shooting without making the rifle unnecessarily heavy. With a 322.00 mm overall length and support for a 31.75 mm maximum barrel diameter, the chassis gives enough clearance for heavier barrel profiles commonly chosen for accuracy-focused CZ 457 builds.

Compatibility with AR-15 Style Grips and MDT Pistol Grips is one of the model’s most practical advantages. Grip shape and angle have a direct effect on wrist position and trigger press, so this flexibility helps the rifle feel more natural whether it is set up for bench work, barricades, or general field shooting. The chassis is also intended for Competition, General, Hunting, Tactical use, which reflects the broader Gen3 design philosophy: start with a compact base, then configure the rest of the rifle around the job. Because the LSS Gen3 system allows handguard and buttstock changes without disturbing zero, this CZ 457 chassis base is especially well suited to shooters who want one rimfire action to support several roles over time.

About MDT

MDT Sporting Goods was established in 2009 and began in Chilliwack, British Columbia, Canada. The company identifies the TAC21 as its first chassis, which set the direction for a product range focused on modern rifle support systems. MDT designs, manufactures, and sells rifle chassis systems, magazines, buttstocks, and accessories for target shooting and hunting, with its head office remaining in British Columbia, Canada.

MDT is particularly known for building products around practical shooter feedback. The company states that its chassis, magazines, and accessories are developed with input from competitive precision shooters, which helps explain the emphasis on modularity, fit, and repeatable rifle setup seen across the lineup. Its broader range includes chassis, stocks, magazines, bipods, scope bases, and scope rings, making MDT a specialist brand for shooters assembling complete precision or field rifle systems.

Main Features

• Manufacturer: MDT
• Chassis Series: MDT LSS
• Made in: Canada
• In production since: 2025
• Material: Aluminium
• Weight: 998.00 g
• Length: 322.00 mm
• Min. Forend Length: 142.00 mm
• Max. Forend Length: 142.00 mm
• Max. Barrel Diameter: 31.75 mm
• Foldable: No
• Application: Competition, General, Hunting, Tactical
• Magazine Compatibility: CZ 457 Magazine Compatible
• Grip Compatibility: AR-15 Style Grips, MDT Pistol Grips

Warranty

MDT provides a 2-year warranty for this chassis. This stated warranty period covers the product as specified for this model.