When I put the Samson Swivel Stud QD Adapter on, I had to hammer the sides of the sling swivel clevis together until they touched, like this \/ to get the yoke of the adaptor over it. And I had to re-drill the holes because they weren't parallel to each other, anymore, and they were a bit too small for the screw. I also ground a little bit off the very bottom, and filed inside the yoke of the QD adaptor, just to force it all together in a Jerry-rigged manner. Despite all of that, the BLAM fit on nice and snug when I slid it into place, and the cross-screw went through the holes no problem. After I tightened it, I tightened the set screw on the bottom. Then after I was sure everything worked as it should, I took the screws out, used blue 242 Loctite on them, and torqued them down to 15 inch-pounds. They aren't going anywhere. Everything was good, except I could still see this \/ on the bottom of the front sight base from behind. So I squirted some black hot glue in the hole, and after it set trimmed it off with an X-Acto knife. I had to do it again to fill a tiny void that was still there in the middle. Then I rubbed a Sharpie across all of it to try to blend the different shades of black together. If I didn't tell everyone what I did, I don't think anyone would know without taking the BLAM off the barrel and seeing the bent sling swivel clevis. It looks better IRL than it does in the picture.