LVLING Quick Detach Cam Lock QD Bipod Adapter for Picatinny Weaver Rails Fits all Standard 20 mm Picatinny Rail. Works great with Harris bipods or any other bipods that mount onto standard sling stud Rotatable sling stud built in is perfect for mounting bipods or attaching to sling swivels Fits onto Weaver or Picatinny rails such as RAS, RIS rails Quick detachable design with easy cam locking lever for fast installation and detachment