B5 Systems Modular Platform Stock - Coyote Brown - The B5 Systems Modular Platform Stock features an integral left-side folding steel hinge, adjustable length of pull, spring-assist cheekpiece, ambidextrous fixed and limited rotation quick disconnect sling mounts, and a nonslip buttpad. Attaches via 1913 Picatinny mount. Constructed of durable composite materials and steel hardware. Features: Made in the USA ; Collapsible 2 1/4in Length of Pull Adjustment; Adjustable Spring Assist Cheekpiece Adds 1/2in of Height. (To open, pull back and push up. To close pull back and push down); Integral Left-Side Folding Steel Hinge; Cushioned Non-slip Buttpad; Fixed Sling Mounts and Steel Anti-rotational QD Mounts; Color-Matched Steel Hardware; Attaches via 1913 Picatinny Mount;