The Hogue OverMolded® collapsible buttstock features reinforced polymer construction with a rubber cheek rest and a rubber/polymer hybrid butt pad that provides snag-free rifle shouldering. This unique design creates a snug anti-rattle friction fit that prevents unwanted movement along the buffer tube. Available in Mil-Spec or commercial diameters. Comes in two different buffer tube sizes: Commercial: For use on 1.168" diameter buffer tube Mil-Spec: For use on 1.148" diameter buffer tube