Ok, this happened to me twice now and I am stumped. I first ordered the sling from Numrich, sent it back, then got one off gun broker. Both appear to have the same issue. They don't fit. When I bring the sling through the swivels I should be able to pull it through the loop on the sling and bring it up to "button" in place. The sling never makes it to that loop. Both slings had the same problem. So what gives? How do I attach this sling? What am I doing wrong? Or did my K31 hit an unforseen growth spurt or something?!