Now you can add sling swivels to your favorite pump or auto without altering your shotgun. Uncle Mike's Magazine Cap Swivel Sets for 12 Gauge Pump and Auto Shotguns have a factory magazine cap with the swivel base already installed.
Just unscrew the factory magazine cap and replace it with the new cap. For the buttstock, a 3/4 inch wood screw swivel base is included, along with two Super Swivels.