What would the appropriate sling and bayonet be for a 1917 1911 carbine?

The 1918 was designed for this rifle but would be one year later. The pioneer blade is what was issued with some troops but not all from what I can find but it is the only one available in 1917 that fits it properly.

And the sling would appear to be the same one as issued with the K31icon but are any available for that early a date? I'm sure replacement slings would have to be issued so not a huge deal.
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