Collapsible combat stock with advanced features to fit both MIL-SPEC and commercial receiver extensions. Adjustable cheek riser. 6 attachment points for single point, 2-point, and 3-point slings. Rubber buttpad. Storage compartment for two CR123A 3V lithium batteries or two AA batteries. Holds either type of battery without allowing rattle. MIL-SPEC reinforced polymer composite, steel hardware, rubber buttpad.