XTS Folding Stock Adaptor Black. Specifications for XTS 1913 Folding Stock Adaptor: Manufacturer: XTS Color: Black Fabric/Material: 7075 Aluminum Features of XTS 1913 Folding Stock Adaptor Fits 1913 Picatinny Rail Great for PCCs with a 1913 Mounting System Buffer Tube Adaptor that Allows for a Collapsible Brace/Stock Folds for Smaller Storage Areas (Gun Case/Bag) Package Contents: XTS 1913 Folding Stock Adaptor 4 allen keys XTS XTS-1913FLDA: 1913 Folding Stock Adaptor Black