Ok Folks, I have explained this in a few threads, but I finally picked up some plastic D-Rings, so now I can do a show and tell to reduce the confusion.As I have been saying, any sling can be a single-Pont-to-Two-Point convertible sling, like the Magpul MS2/MS3, by using HK-style hooks and a D-ring. You end up with something that is actually more versatile than the MS3 because the MS3 hooks really don't fit a whole heck of a lot of attachment points (I get what they were thinking, but practical reality differed greatly from theory in this case). Plus, you get to use whatever sling you want, so you have choice and can keep what you like.First, as I said, make sure you have HK-style hooks on each end of your two-point sling. I can't see any reason why Mash Hooks wouldn't work, so if you have those that would be fine too.Next, buy a D-ring. I got mine from REI, $2.50 for a 2-pack.Next, weave it into your sling, by the rear connection point, a few inches away from the rear connection point. It is best to do it the way I have done it by putting it between two close webbing points to hold it secure. You want it a few inches from your connection point so that you don't have both strands leaving the weapon right near your cheek weld area.This D-ring will fold in and sit tight and concealed when not in use (when you are using your sling in Two-Point mode). You really won't even notice it unless you look for it:To switch to Single-Point mode, simply unhook the front attachment point and connect it to the D-ring:You are now using a Single-Point sling! Easy peasy.Easily switch back and forth between Single-Point and Two-Point with ease, whenever the need arises.Let me know if anyone has any further questions or ideas.