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 Finlandicon via 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.