SPECS: Molded fiberglass, matte dark gray finish. 10¾” (27.3cm) OAL, 15⁄8” (4.1cm) wide across buttplate, 51⁄8” (12.8cm) high at highest point. 19½ oz. (553g) weight. Fits receiver extension for fixed A2-style buttstock. Accepts straight-body 20-round magazines only.