disclosed is a d - ring for use in sling systems , in particular firearm slings , where quick detachment and consistent behavior of the sling are of particular importance . at least two swivel sockets are provided on opposite sides of the d - ring for ambidextrous use and slots are provided to restrict rotational movement of the attached swivels . the d - ring may be formed from a single toroid or a conglomeration of different toroidal forms .