Perfect compatibility with Hogue OverMolded grips and forends; Light-weight skeletonized reinforced polymer construction; Anti-rattle and beard-safe design; Collapses to user's preferred shoulder position; Polymer cap provides snag-free shouldering; Rubber/polymer hybrid butt pad cushions recoil; Multiple swivel sleeve and sling mounting positions; Precision fit for military specification buffer tubes (diameter = 1.15" / length = 7.25")