This is Sling Mounting Kit for the Mossberg 500 Shotgun 20 Gauge. Comes with everything you need to attach a sling to your shotgun.

Details:

• Fits Mossberg 500 20 Ga Shotgun
• Magazine Cap Sling Adapter, Retainer & Removal Tool
• 1" Quick Detach Sling Swivels
• Buttstock Swivel Stud Base & Washer