MDT Buttstock Interface LSS Gen3, Carbine

• Carbine stock compatibility: This interface lets an MDT LSS Gen3 chassis accept carbine-pattern buttstocks, making it easier to build a rifle around the stock style, length-of-pull options, and rear-end balance you prefer.
• Modular rear-end conversion: The interface is designed so the back end of the chassis can be changed without replacing the core chassis, which helps when adapting one rifle for hunting, range work, or a more compact transport setup.
• No need to disturb the barreled action: On the LSS Gen3 platform, the buttstock interface can be swapped without removing the action, which simplifies reconfiguration and helps preserve an already-established setup.
• 6061 aluminum construction: The aluminum body gives the interface the rigidity needed for a secure stock connection while keeping weight moderate for practical field and range use.
• Installation hardware included: The supplied mounting hardware streamlines installation, so the interface is ready to fit directly to the chassis without sourcing extra small parts.

About the MDT Accessories Series

MDT Accessories sit alongside the company’s chassis systems and magazines as part of a broader precision-rifle ecosystem. The series is built around the idea that a rifle should be adaptable, with components that let shooters tune fit, balance, and configuration instead of being locked into a single layout. Across the range, MDT includes items such as M-LOK accessories, weights, magazine-related parts, buttstock components, bolt knobs, and other hardware intended to refine how a rifle handles in the field or on the firing line.

A defining trait of the series is that compatibility varies by accessory. Some parts are broadly useful, while others are made for specific MDT chassis or stock systems. That approach allows the accessory line to support both practical adjustments and more specialized builds. Within the buttstock-related products in particular, the series addresses rifle fit and rear-end configuration, helping shooters tailor length of pull, stock type, or weight distribution to suit hunting rifles, target rifles, and general precision-shooting setups.

About the MDT Buttstock Interface LSS Gen3, Carbine

The MDT Buttstock Interface LSS Gen3, Carbine is a chassis adapter made for shooters who want to configure an MDT LSS Gen3 around a carbine-style buttstock. Its role is straightforward but important: it creates the connection point between the chassis base and the chosen rear stock system, allowing the rifle to be set up with the handling characteristics of a carbine-pattern rear end. For shooters building a compact precision rifle, a practical crossover rifle, or a chassis gun that needs familiar stock options, that flexibility matters more than a fixed one-piece solution.

Because the LSS Gen3 platform is modular by design, this interface supports one of the system’s key advantages: the ability to change the rifle’s rear configuration without rebuilding the entire chassis. That is useful when the same rifle may serve different roles, such as a lighter field setup one day and a more range-oriented configuration the next. MDT also designed the LSS Gen3 concept so the buttstock side can be changed without pulling the barreled action, which makes the process faster and avoids unnecessary disruption to the rifle setup.

In practical terms, the 6061 aluminum construction provides the stiffness needed at a critical junction of the chassis, while the Cerakote finish adds surface protection for regular handling and transport. At 0.39 lbs, the carbine interface adds only modest weight while expanding stock compatibility. It is a focused component, but for an LSS Gen3 build, it is the part that determines which style of rear stock the rifle can use.

About MDT

MDT Sporting Goods was established in 2009 and began in Chilliwack, British Columbia, Canada. The company designs, manufactures, and sells rifle chassis systems, magazines, buttstocks, and accessories for target shooting and hunting, with its head office remaining in British Columbia. MDT identifies the TAC21 as its first chassis, and that early focus on chassis design still defines the brand today.

MDT’s product range now extends across chassis, stocks, magazines, bipods, scope bases, and scope rings, with many products developed using input from competitive precision shooters. That emphasis on modular rifle systems and shooter-driven design is especially relevant to parts such as the LSS Gen3 buttstock interface, where compatibility, fit, and practical adaptability are central to the product’s purpose.

Main Features

• Manufacturer: MDT
• Series: MDT Accessories
• Made in: Canada
• Accessories for: Rifles
• Weight: 0.39 lbs
• Material: 6061 aluminum
• Finish: Cerakote
• Attachment interface: MDT LSS GEN3 chassis base
• Compatible buttstocks: SCS, SCS Lite, CCS
• Compatible chassis: LSS GEN3

Warranty

2 years. MDT states a 2-year warranty for this product, covering the buttstock interface as part of the manufacturer’s stated warranty period.

In the Box

• MDT Buttstock Interface LSS Gen3, Carbine
• Installation hardware