I'm trying to get my gear together for an Appleseed shoot next month. I received my GI sling (ordered from the Appleseed/RWVA store) the other day and just tried to string it up on my AR but ran into a problem. I have a Magpul STR stock on my AR - it's like a SOPMOD. So I ordered a Midwest Industries 1 1/4" heavy duty QD swivel (this one, to be exact). But the spring clip on the GI sling won't fit over the swivel. It's like the swivel is too thick or not quite wide enough for the clip to go over it. I attached a couple of pictures that will hopefully help show what I'm running into. So...I either need a new sling or a new QD swivel. Can someone please help me sort this out?