Sling and swivel parts are the studs, quick-detach sockets, and adapters that connect a sling to a rifle or shotgun. Wood-screw studs fit traditional stocks, while QD sockets and M-LOK or Picatinny adapters serve modern builds. Shop hardware from GrovTec, Uncle Mike's, Magpul, and GG&G to set up a secure carry system on any long gun. Pair the right stud spacing and socket type with your stock before choosing a sling.