The GL-MAG M4 Survival buttstock incorporates an inconspicuous/sleek M4 magazine carrier. It features a sleek design with no protruding parts, that will not get caught on gear or webbing. The stock incorporates a quick release button for swift magazine change and an ambidextrous quick detach rear sling swivel connectors. Made with fiberglass reinforced polymer composite, it is compatible with most Mil-Spec and commercial tubes. This model has a black finish.