Why vinegar?
Is it more effective for carbon removal? I have used white vinegar to remove blue, it works for that.
Just found some record that indicate the following:
~859,000 MK III Stens made, not 876,000
~50,000 of those were sold to Finlandvia Interarms.
Interarms also sold some to Kenya, quantity unknown
India received something like ~100,000 between 1948 and 1950, provided as commonwealth aid or as payment for monies owned to India from WWII. That figure was quoted as a gross estimate by the way.
That said there is still 700,000 that the final disposition is lacking.
The implications are the Sten in active service did not last very long.