The Magpul BSL is an AR arm brace designed to improve the single-handed employment of large-format pistols. The BSL utilizes Magpul design and engineering to offer a stabilizing accessory with a robust feature set and trusted Magpul quality. 

With classic Magpul aesthetics, the BSL is compatible with Mil-Spec carbine receiver extensions and employs a simplified, durable, and easy to use adjustment mechanism. An integrated QD cup and two M-LOK compatible slots provide ambidextrous sling mounting options and enable stabilizing sling tension to be applied, drastically increasing single-handed control of the firearm. With a straight-forward design and Magpul innovation, the BSL is a simple solution to improving your AR pistol. 

Made in the USA.

IMPROVES SINGLE-ARMED USE OF LARGE-FORMAT PISTOLS

Designed and intended for use as a stabilizing accessory for one-handed firing

M-LOK compatible slots for additional sling mounting options  

Ambidextrous rear QD cup allows sling tension to be applied while firing with one hand to improve stability 

Toolless, single-handed adjustment

SIMPLE, STRONG CONSTRUCTION

High-strength polymer and metal construction