Kabar Mules have a pocket clip. But maybe the older models didn't, don't know. If everything else is identical in the construction of the Mule's, then all you need is to mail Kabar CS an enquire about a pocket clip, they may even send it free of charge. Then a simple matter of finding someone to drill and tap two holes for the clip. If this can't be done then STR can make a clip, but I honestly think you could get a new Mule w/pocket clip for about the same price it would cost to get a clip for the one you already have.
