Muskox has been very hospitable and helpful in trying to help me get the Akah sling. My thanks!!
In the meantime, I would like to post an alternative to the problem which I have found, unexpectedly.
That is ALL WEATHER HORSE REINS, with rubber stippled backing! The stippling is larger than the Akah, but it is built with quality harness leather, and only $29 I am going to try it on my rifles with European 3/4 inch sling swivels.