XTS AR Collapsible Skeleton Stock XTS 58 Black XTS 58. For comfortable shoulder positioning the XTS-58 Skeleton Stock is equipped with and angled rubber buttpad. With it's sleek minimalistic style and light weight design it would definitly be a great aftermarket replacement or addition to any AR. Specifications for XTS AR Collapsible Skeleton Stock XTS 58: Manufacturer: XTS Color: Black Gun Model: AR-15 Gun Type: Rifle Weight: 8.52 oz Length: 7 in Additional Features: 1 Sling Point Condition: New Hand: Ambidextrous Buffer Tube Size: Mil-Spec Fit: Mil-Spec AR Gun Make: AR Platform Fabric/Material: Polymer Features of XTS AR Collapsible Skeleton Stock XTS 58 Sleek Skeleton Design Rubber Buttpad Slots for Sling Mounting Package Contents: XTS AR Collapsible Skeleton Stock XTS 58 What firearm models does the manufacturer say XTS AR Collapsible Skeleton Stock XTS 58 is compatible with? The manufacturer suggests that XTS AR Collapsible Skeleton Stock XTS 58 is compatible with AR-15XTS XTS 58: AR Collapsible Skeleton Stock XTS 58 Black