Carbine bayonet band - how tight and where?

[painter777]

Probably used postwar by some non-US authority - seems to have had an arsenal makeover in 1961.

Patrick,
I have a feeling your barrel may have been inspected by the Dutch. AI was the mark used by the artillerie inrichtingen Dutch arsenal. Other carbine barrels have been reported with this marking and 60's dates.
The Dutch were also supplied thru the MAP Program / Lend-Lease.

Here is a link to Patrickduis from the Netherlands, reporting this marking on his carbine:

Inland s/n 373872 - The Carbine Collector's Club

Here are more examples of Carbines found by Patrickduis from the Netherlands:

Looking for info n the U.S. 104th I.D. - The Carbine Collector's Club - Page 1

The AI Logo Stamp-

https://static.wikia.nocookie.net/gu...20190311062554

I hope you find this helpful