Features: Sling Swivel Stud to Picatinny Rail Allows the mounting of a bipod to rifles equipped with Picatinny or quad rails Rotatable sling stud built in is perfect for mounting bipods or attaching to sling swivels Works great with bipods that mount onto standard sling stud Specification: Material: High Quality Aluminium Adopted the QD design, can install and detach the adapter quickly. Rail type: Picatinny / Weaver Bipod Adapter Size: Approx. 50x21mm (L x H) Mount: For 20mm Rail Weight: 2 oz What is included: 1x QD Bipod Sling Adapter