I'm relatively new to firearms and so I have a beginner's stupid question. I have a Mossberg 590 and I want to put a sling on it. (I know, many of you are saying I don't need one but that can be another thread discussion.) I have a Limbsaver SW Tactical sling. Now the muzzle area already has a little loop that allows me to thread one end of the sling. However I'm having trouble with the butt of the gun. I'm guessing I need some kind of attachment to thread the sling but I have no idea what. Any help would be greatly appreciated. Thanks in advance for all your input.