Uncle Mikes Swivels 760 ES 1" Black The unique quick detachable (QD) design stops the metal swivel body from contacting the gun The close Machining tolerances provide smooth and silent operation Adapter bolt swivel base replaces factory fore-end bolt on the Remington 760 and 7600 (1968 and older) without dismantling Adapter bolt swivel base replaces factory fore-end bolt on the Remington 760 and 7600 (1968 and older) without dismantling Wood screw base for stock Swivel Lock spring-loaded plunger and a knurled, threaded sleeve eliminates accidental opening of the swivel