This versatile bracket supports your magazine extension tube and provides a rail for attaching a weapons light and on the opposite side is a Quick Detach Stud for a sling point. You can change the rail or QD stud to the other side if that is your preference or leave the rail off if not needed, very versatile. Aluminum black anodized mount with hex screws. Fits Remington Shotguns with Tube Extensions and will work with most Extension other then the Remington.
This From Remington and made as well as the ones that cost three times as much. It is the sling mount category because, well you can attach a sling to it and a light. See.