The GL-CORE buttstock features an integrated cheek weld ergonomic buttpad and an interchanging tube adapter. It provides an unmatched fit on Mil-Spec and Commercial buffer tubes with a high level of efficiency and comfort. The ergonomically shaped rubberized butt-pad for quick shouldering and easy maneuvering of the weapon. Made of durable and light-weight fiberglass reinforced polymer composite the stock has two integrated quick detach rear sling swivel connectors. This model has a black finish.