From GG&G: The New GG&G Mossberg 500 Front Sling Attachment easily installs by removing the barrel and star washer, sliding the GG&G sling adapter on top of the barrel extension, reinstall the barrel and tighten the attachment screw through the new sling attachment. Besides providing a sturdy mounting position, it aids in satisfying one of the critical factors in a tactical equation, the ability to make a smooth, rapid and safe transition to your sidearm. It is designed to fit most 500 models such as the Persuader, Cruiser, Combo, and model numbers 590, 500a, 835, 88, 930, 590 A1, 535.
As with our other shotgun front sling attachments, this one is fully ambidextrous. The GG&G Mossberg 500 Shotgun Front Sling Attachment is machined from AS-35 Geneva Steel and mag phosphated matte black to mil-spec. All corners and edges have been rounded and dehorned for the operators safety.
NOTE: Due to varying tolerances in Mossberg's placement of the rear sling-swivel stud on SpeedFeed stocks, the user may need to adjust the stud's placement to work properly with the sling's rear attachment.