Sorry Simon, a bit more on slings.
Strangely,
Thanks so much for your very informative reply.
Please excuse my ignorance, but I am a bit confused with your reference to the leather 1917 Patt (M17) slings. This is a pattern I am unfamiliar with. The sling that comes closest to that terminology that I am aware of, is the U.S., WW I, Kerr "No-Buckl" web sling, or M1917, that was a supplemental sling to the more common, leather, M1907 sling.
The sling you mention is leather, so it obviously can't be the Kerr M1917 web sling, but could we be possibly talking about the M1907, as that leather sling was also the same type as originally used on the No. 4 (T) and L42? According to the C.E.S. for the No. 4 (T) that sling is referred to as SLING, Leather, USA loop patt. Could that be it?
Thanks for your help.
Terry