B5 Systems Precision Stock Collapsible Medium FDE

The B5 Systems Precision Stock Collapsible Medium FDE is a mil-spec carbine stock purpose-built for operators and shooters who demand a precision cheekweld without sacrificing modularity. Born from two decades of B5 Systems refinement—drawing on the proven cheek profile of their legendary SOPMOD and Bravo stocks—this collapsible design combines adjustable ergonomics with Mil-Spec compatibility. Whether you're running a law enforcement carbine, a precision AR platform, or a duty rifle that sees regular service, the Precision Stock delivers the repeatability and comfort demanded by professionals who depend on their equipment in high-stress environments.

This medium-length stock features an adjustable cheekpiece and buttpad that allow you to dial in optimal sight picture geometry and recoil management for your unique physiology and optic setup. Internal tensioners eliminate rattle and unwanted play, critical for maintaining zero integrity during dynamic movement and repeated deployment. The FDE (Flat Dark Earth) finish matches modern tactical aesthetics while providing a durable, low-reflectivity surface suitable for both daylight and night operations. At 1.45 lbs, the stock adds minimal weight to your platform while maintaining structural rigidity—essential when precision and repeatability are non-negotiable.

Law enforcement tactical teams, military personnel, and serious precision rifle shooters benefit most from the Precision Stock's adjustable ergonomics, especially when running optics at varying heights or shooting from unconventional positions. Installation is straightforward on any Mil-Spec carbine receiver extension (buffer tube), making this an ideal upgrade for existing carbines without receiver modifications. The medium length accommodates standard body armor and load-bearing equipment, ensuring the stock doesn't catch or bind during tactical movement. This collapsible design pairs seamlessly with free-float handguards, rail systems, and modern furniture, making it a proven choice for builders prioritizing accuracy and user control.