Description The B5 Systems Sierra K is a purpose‑driven compact stock designed for PDW and short AR platforms. Built from durable polymer and engineered for a slim profile, it provides a low‑profile cheek weld and snag‑resistant controls for close‑quarters handling. The Sierra K mounts to a shortened compact Mil‑Spec receiver extension and includes integrated sling fittings and tensioning features for secure, repeatable performance. Lightweight and compact, it suits users who need a minimal, efficient stock for compact rifles. Key Specifications The product type is Stock. The model is Sierra K. The stock fits AR Rifles. The finish color is Black. The frame material is Polymer. The weight is 6.6 oz. The height measures 3.8 inches. The width measures 1.5 inches. Mounting is via a shortened compact Mil‑Spec receiver extension. Features include a slim cheek profile, snag‑free adjustment lever, limited‑rotation QD, integral fixed sling mounts, internal tensioners, and an anti‑slip buttpad. Compact, tough, and practical, the Sierra K stock gives compact AR platforms a low‑profile, well‑engineered interface that emphasizes reliability and function. Its lightweight polymer construction and purpose‑driven feature set make it suitable for users seeking a minimal, durable stock for PDW or short‑length systems.
