MDT Castle Nut

• Simple retention part: The MDT Castle Nut secures compatible stock or buffer-style components in place, helping maintain a solid fit on a rifle during setup, transport, and regular use.
• Built for rifle applications: Designed as a rifle accessory, it suits builds where dependable hardware matters for keeping the rear assembly properly tensioned and aligned.
• Black finish: The black color gives the part a clean, low-profile appearance that blends easily with modern rifle components and precision-rifle accessories.
• Made in Canada: Canadian manufacturing aligns with MDT’s focus on precision-rifle equipment and supports consistent fit and finish across its accessory range.
• Part of the MDT Accessories range: As a component within MDT’s broader accessory lineup, it fits the same practical approach the brand applies to rifle setup, adjustment, and support parts.

About the MDT Accessories Series

MDT Accessories sits alongside the company’s chassis and magazine lines as a practical extension of its precision-rifle ecosystem. Rather than focusing on one type of component, the series covers a broad mix of support parts that help shooters refine how a rifle fits, balances, and functions in real use. Within the range, MDT includes items such as M-LOK components, weights, magazine accessories, buttstock accessories, bolt knobs, hoods, and other small hardware that support a complete rifle setup.

A defining trait of the series is its emphasis on application-specific compatibility. Some parts are broadly useful, while others are designed for particular MDT chassis or buttstocks, so the range serves both general rifle maintenance and more specialized precision-rifle tuning. The overall design philosophy is straightforward: provide well-matched components that help shooters adjust rifle fit and weight distribution without unnecessary complexity. That makes the MDT Accessories family especially relevant for target shooting and hunting rifles where small changes in ergonomics, balance, or hardware security can have a noticeable effect on handling.

About the MDT Castle Nut

The MDT Castle Nut is a compact rifle accessory intended for builds that rely on secure, properly tensioned hardware at the rear of the rifle assembly. While small in size, this type of part plays an important role in keeping compatible components locked in position, which helps preserve consistent fit and reduces the chance of unwanted movement over time. On a rifle that is handled frequently, transported often, or adjusted as part of a custom build, that kind of retention matters.

As part of the MDT Accessories range, this model follows the same practical approach seen across MDT’s precision-rifle components. Its purpose is not to change the rifle’s shooting characteristics directly, but to support a stable and dependable setup by securing the associated part in place. That makes it relevant for shooters who value clean assembly, repeatable positioning, and hardware that integrates neatly with the rest of a modern rifle system.

The black finish keeps the appearance understated and easy to match with other rifle parts, while Canadian manufacturing reflects MDT’s established focus on precision-rifle equipment. For rifle owners assembling, maintaining, or updating compatible stock-related hardware, the MDT Castle Nut serves as a simple but necessary component that contributes to a tidy, properly secured build.

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, scope rings, and related accessories. MDT identifies the TAC21 as its first chassis, a product that helped define the brand’s direction in the precision-rifle market.

MDT’s product development centers on practical input from shooters, particularly in the precision and competitive space. The company states that its chassis, magazines, and accessories are developed with feedback from competitive precision shooters, which fits the functional, user-driven character of its catalog. Today, MDT continues to design, manufacture, and sell rifle-support equipment from British Columbia, Canada, with a reputation built around modular rifle systems and the supporting parts that help shooters tailor fit, balance, and overall handling.

Main Features

• Manufacturer: MDT
• Series: MDT Accessories
• Accessories for: Rifles
• Color: Black
• Made in: Canada

Warranty

2 years. The MDT Castle Nut is covered by a two-year warranty.