Rifle Bipod Cam Lock Bipod Sling Adapter Mount for Rifle Rail 20mm Bipod Fast installation and detachment with the tool provided. Fits onto Weaver or Picatinny rails such as RAS, RIS rails Rotatable sling stud built in is perfect for mounting bipods or attaching to sling swivels Works great with Beileshi bipods or any other bipods that mount onto standard sling stud Fits all Standard 20 mm Rifle Rail.