Ok, I feel like a moron, but I need some help. I have a slick 2 point sling thanks to Rocky Mountain Tactical. I also bought two of their HD quick detach sling swivels, thinking they would attach to my points on the magazine tube extension and Knoxx stock. I am wrong. What adapters do I need to attach the sling? My 870 and swivels are pictured below. Wanna kill these ads? We can help!