Package Included:��Note: The sling adapter is not included��1x BipodFeatures:Adjustable Stud Spring 6"-9" BipodFits all Standard 20 mm Picatinny RailQuickly Attach to or Detach From the Rail Mount Using Existing Quick Release ScrewQuick Release Button for 5 Level Locking Positions Legs with 12mm IncrementLegs can be FoldedMaterial: Made of Durable， High Density AluminumExtension Length: Approx.15cm(6") ~ 23cm(9")