B5 Systems MPS-1555 Modular Platform Stock Coyote Brown Folding Collapsible

The B5 Systems MPS-1555 Modular Platform Stock is a rugged, multi-adjustable buttstock purpose-built for firearms equipped with a 1913 Picatinny rail interface at the rear of the receiver. Designed for rifles, shotguns, and pistol-caliber carbines that lack a traditional fixed or collapsible stock mounting point, this modular stock brings B5's proven ergonomics and construction quality to a broader range of host platforms in a versatile Coyote Brown finish.

At the core of the MPS-1555 is an integral left-side folding steel hinge that allows the stock to swing out of the way for compact transport or storage, while a collapsible length-of-pull adjustment and adjustable spring-assisted cheek riser let the user dial in a comfortable, consistent weld. A cushioned nonslip buttpad anchors the stock against the shoulder to manage recoil and prevent slippage during rapid fire. The stock is constructed of durable composite with steel hardware for long service life in hard-use environments.

The B5 Systems Modular Platform Stock measures 8.06 inches long by 1.76 inches wide and 4.67 inches tall, with a total weight of 16.8 ounces. Whether you are building out a PCC, upgrading a tactical shotgun, or finishing a custom rail-mounted rifle, the MPS-1555 provides the ergonomics of a premium adjustable stock on platforms that cannot accept a standard carbine buffer-tube assembly.