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I found it useful to have a QD sling. They provided many attachment points for the QD. For the 2 point, I prefer the point at the end of the small side rail... its the hole on about a 30 degree angle. For the other end, if you have the factory stock use that point. If you are like me, you changed out the stock. In this case I would buy the ASAP®-QD - Ambidextrous Sling Attachment Point by magpul. Here is a link http://store.magpul.com/product/MAG529/188
i found the NEA was designed for use of the QD sling. hope this helps