Here's a photo showing the D-rings.
<a href="http://forums.lugerforum.com/lfupload/holster_with_d_rings.jpg" target="_fullview"><img src="http://forums.lugerforum.com/lfupload/holster_with_d_rings.jpg" width="400" alt="Click for fullsize image" /></a>
Pete, there are a bunch of photos and a lot of discussion about this rig on the thread "My first Luger!!" on the New Members Forum.
Don