Functional, solid and very handy - Magpul RSA Rail Sling Attachment

This is an excellent product. It is stable and rugged. I have several of them now and I haven't had any problems with any of them... and that's after a lot of heavy use. They've survived Afghanistan with no issues. The loop is large, but not so much that it gets in the way, so it will accomodate even fat sling clips. It works quite well with the Magpul MS3 clips, which is what I prefer. You can use other styles of metal retention clip, and it won't be an issue. My only hangup is that the finish is a little rough, and when taken apart, just looks and feels like cheap cast metal (because it is). The notch on the screw is a little shallow for my liking, and should be deeper so that you can use a field expedient means to unscrew it. Also the screw is pretty coarse threaded. I would prefer a finer thread pitch and a longer screw. That said, I've not had any problems so far. I won't own a tactical AR without one.