This M4-Style collapsible buttstock features a one piece adapter and a GLR1-6 buttstock. The integrated pistol grip is textured for a sure grip and has internal storage for batteries. The stock is angled for optimum recoil control. The GLR-16 buttstock features QD sling sockets and water tight storage compartments for batteries and other accessories. The stock features 6 positions of adjustment to fit a wide range of conditions. Direct replacement for the factory stock, no gunsmithing required.