Uncle Mike's 14412 Swivels, 760 BB 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 Fits Remington 14412 7600, 760S and six pump actions, 740, 742, other 22 and centerfires with 645 to 660 inch diameter barrels Fits Remington Model 7600, 760s and Six Pump Actions, 740, 742, other .22 and centerfires with .645 to .660" diameter barrels Wood screw base for buttstock Swivel Lock spring-loaded plunger and a knurled, threaded sleeve eliminates accidental opening of the swivel