Magpul BSL Arm Brace Mil-Spec - Black

Magpul BSL Arm Brace Mil-Spec - Black

Take control with confidence. The Magpul BSL Arm Brace is engineered to enhance the single-handed use of large-format AR pistols, delivering unmatched stability, intuitive adjustability, and rugged durability—all backed by Magpul’s legendary design pedigree. Whether you're navigating tight spaces or optimizing your setup for tactical precision, the BSL transforms your AR pistol into a more controllable, mission-ready platform.

Crafted for compatibility with Mil-Spec carbine receiver extensions, the BSL features a toolless adjustment mechanism, ambidextrous sling mounting options, and M-LOK slots for added versatility. Its high-strength polymer and metal construction ensures it stands up to hard use, while its streamlined profile keeps things simple and effective. Made in the USA and built for shooters who demand performance without compromise.

Stabilizing Design for One-Handed Use
Improves control and accuracy when firing large-format AR pistols single-handedly.

Mil-Spec Compatibility
Fits standard carbine receiver extensions for seamless integration with AR platforms.

Toolless, Single-Handed Adjustment
Quick and easy to modify on the fly—no tools required.

Ambidextrous Rear QD Cup
Enables sling tension for enhanced stability during one-handed operation.

Dual M-LOK Compatible Slots
Expand sling mounting options and accessory compatibility.

Classic Magpul Aesthetics
Clean, tactical look that complements any AR build.

High-Strength Polymer & Metal Construction
Built tough to withstand demanding environments and heavy use.

Made in the USA
Proudly manufactured with quality and precision.

Specifications

• Compatibility: Mil-Spec carbine receiver extensions
• Adjustment Mechanism: Toolless, single-handed
• Sling Mounts: Ambidextrous rear QD cup, dual M-LOK slots
• Material: High-strength polymer and metal
• Finish: Matte black
• Intended Use: Stabilizing accessory for one-handed firing of large-format pistols
• Compliance: All ATF, NFA, state, and local laws apply
• Country of Origin: Made in the USA