Uncle Mike's Quick Detachable Ruger Auto and Single Shot Carbines Sling Swivels (Nickel Plated, 1-Inch Loop) Fore-end adapter fits barrel band of 10/22, .44 Mag. and No. 3 carbines 1/2" wood screw for fore-end stock mounting Swivel Lock spring-loaded plunger and a knurled, threaded sleeve eliminates accidental opening of the swivel Closed Link technology creates a permanent ring bond Fore-end adapter fits barrel band of 10/22, .44 Mag. and No. 3 carbines " wood screw for fore-end stock mounting Swivel Lock spring-loaded plunger and a knurled, threaded sleeve eliminates accidental opening of the swivel