Hi,
If you look at the 'History of the Lan-Cay Bayonet' in the general m9 bayonet part of the forum you can find the following line there:
"The second group of P.I. M9 bayonets with the full list of changes including the finish were delivered to the Army on 8/18/95 making this the first group of the second contract. Now comes the tricky part, during the second contract production the blade grinding was changed over from hollowing grinding to flat grinding to give the blade a stronger edge. Examples of both the flat grind and the hollow grind can be found with the standard for the time marking of "M9 / LANCAY / USA"."
It seems yours is one of these. However the '93 marking on the Fastex clip is a little weird. Maybe they used a scabbard from an older contract lying around, or maybe you scabbard and knife are not a match originally.
Hope this helps.
Best regards,
Menno
The Netherlands
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