Magpul Industries  |  SKU: RSR-MPIMAG1251BLK

Magpul - BDA Arm Brace for AR Pistols, Mil-Spec-Compatible

Sale price $5849 Regular price $5995
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Description

The Magpul BDA Arm Brace is a reliable stabilizing accessory engineered to improve single-handed control of AR pistols. Built with high-strength polymer and corrosion-resistant metal fasteners, the BDA provides Magpul’s trusted quality in a streamlined, non-adjustable brace designed for practical use.

By swapping out the interchangeable clamps, the BDA is compatible with both Mil-Spec carbine, A5 receiver extensions, and Pistol receiver extensions (1.175”–1.25” OD). An integrated ambidextrous rear QD cup allows sling attachment, enabling sling tension for increased stability during one-handed firing. Its wide lateral surface area maximizes forearm contact, improving control while maintaining a compact, straightforward design.

Key Features:

  • Stabilizing brace designed for one-handed firing of AR pistols
  • Non-adjustable/fixed position for simplicity and compliance
  • Interchangeable clamps fit Mil-Spec carbine, A5, and Pistol extensions
  • High-strength polymer body with corrosion-resistant hardware
  • Ambidextrous QD sling cup for improved single-hand stability
  • Large surface area for enhanced forearm support
  • Made in the USA with Magpul engineering and innovation

Technical Specifications:

  • Platform: AR15, M4
  • Compatibility: Mil-Spec carbine, A5 receiver extensions, and cylindrical pistol receiver extensions (1.175”–1.25” OD)

Legal Notice: This product is designed and intended to serve only as a forearm brace for one-handed firing of an AR pistol. It is not intended to be shouldered. All ATF, NFA, state, and local laws apply. Users are solely responsible for ensuring compliance with applicable regulations and firearm configurations.

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Frequently Asked Questions

How does the Magpul BDA Arm Brace enhance single-handed control of AR pistols?

The Magpul BDA Arm Brace is compatible with Mil-Spec carbine, A5, and cylindrical pistol receiver extensions with an outer diameter of 1.175”–1.25”. This compatibility is achieved through interchangeable clamps that allow the brace to fit different extension types. It's important to ensure your AR pistol's receiver extension falls within these specifications to guarantee a proper fit and optimal performance. For more on selecting the right components for your firearm, see our Weapon Parts & Upgrades collection.

What are the compatibility requirements for the Magpul BDA Arm Brace?

The Magpul BDA Arm Brace is compatible with Mil-Spec carbine, A5, and cylindrical pistol receiver extensions with an outer diameter of 1.175”–1.25”. This compatibility is achieved through interchangeable clamps that allow the brace to fit different extension types. It's important to ensure your AR pistol's receiver extension falls within these specifications to guarantee a proper fit and optimal performance. For more on selecting the right components for your firearm, see our Weapon Parts & Upgrades collection.

Can the Magpul BDA Arm Brace be adjusted for different arm sizes?

The Magpul BDA Arm Brace is a fixed-position brace, meaning it does not offer adjustability for different arm sizes. This design choice prioritizes simplicity and compliance with regulations. While this may limit customization for individual arm sizes, the brace's wide surface area is intended to provide sufficient support for a range of users. It's crucial to evaluate whether a fixed brace meets your specific needs before purchase.

Is the Magpul BDA Arm Brace legal in all states?

The legality of the Magpul BDA Arm Brace varies by state and local regulations. Users are responsible for ensuring compliance with all applicable ATF, NFA, state, and local laws. It's important to consult legal resources or local authorities to confirm that the use of a forearm brace for AR pistols is permissible in your area. Non-compliance can result in legal consequences, so due diligence is advised.

How does the ambidextrous QD sling cup improve firing stability?

The ambidextrous QD sling cup on the Magpul BDA Arm Brace allows for the attachment of a sling, which can be used to increase stability during firing. By applying tension through the sling, shooters can achieve better control and accuracy, particularly in one-handed firing scenarios. This feature is especially beneficial in tactical situations where mobility and precision are critical. For more insights into tactical gear, explore our Tactical Survival Gear collection.

What materials are used in the construction of the Magpul BDA Arm Brace?

The Magpul BDA Arm Brace is constructed from high-strength polymer and features corrosion-resistant metal fasteners. These materials are chosen for their durability and reliability in various environmental conditions. The polymer body provides a lightweight yet robust structure, while the metal fasteners ensure long-term resistance to rust and wear. This combination is ideal for maintaining performance and longevity in demanding tactical environments.

What are the key benefits of using a non-adjustable brace like the Magpul BDA?

Using a non-adjustable brace like the Magpul BDA offers simplicity and compliance benefits. The fixed position eliminates the need for adjustments, reducing potential points of failure and ensuring consistent performance. This design also aligns with regulatory requirements, minimizing legal complexities. However, the tradeoff is less customization for individual comfort, which users must weigh against the benefits of straightforward functionality.

How does the Magpul BDA Arm Brace contribute to compliance with firearm regulations?

The Magpul BDA Arm Brace is designed to function as a forearm brace for one-handed firing, which helps users comply with specific firearm regulations. By not being intended for shouldering, the brace adheres to ATF guidelines for pistol braces. This compliance is crucial for legal use, as violations can lead to severe penalties. Users should always verify that their firearm configurations remain within legal boundaries when using this brace.

What scenarios are ideal for using the Magpul BDA Arm Brace?

The Magpul BDA Arm Brace is ideal for tactical scenarios where mobility and quick target acquisition are essential. Its design supports one-handed firing, making it suitable for situations where the other hand might be occupied, such as operating a radio or managing other equipment. The brace's stability and control are beneficial in both urban and rural environments, providing versatility for various operational needs.

Does the Magpul BDA Arm Brace affect the overall weight of the AR pistol?

The Magpul BDA Arm Brace adds minimal weight to the overall setup of an AR pistol due to its high-strength polymer construction. This lightweight design ensures that the pistol remains easy to handle and maneuver, which is crucial in dynamic shooting environments. While the brace does add some weight, it is balanced by the enhanced control and stability it provides, making it a worthwhile addition for those seeking improved performance in single-handed firing.