I just installed a Predator P-9X system on my .50 Beowulf.  There is a sling swivel with no sling loop on the front left rail.  Where do I get a sling loop for this attachment point?  Maybe this is a stupid question, but my ARMS 58 came with a sling loop attached.   Maybe it is a part I have to purchase extra?

I found a rivet and sling loop on Model1Sales.com.  I guess I need to buy these parts and install a rivet myself.  Is that right?  For $250 you would think POF-USA would do this for their customers.

Thanks.

Could you post a pic?  It sounds like you might have a quick release sling stud.  In that case, a 5 dollar swivel is all you need.  Pics would be great for us to be sure.