The UTG Swivel Stud Picatinny Slot Adaptor Kit converts your traditional rifle sling swivel stud and allows you add a sling and picatinny rail bipod. The UTG swivel stud Picatinny slot adaptor kit allows your original sling swivel stud to retain it functionality for the installation of a sling when installed. The picatinny rail that mounts to sling stud is quick and easy to install, with no permanent modification required. The Swivel Stud to Picatinny adaptor is made from steel and aluminum construction with a padded adaptor plate to prevent marring of your stock.