What types of military production Ontario M-9's exist?

[Menno]

Hi Carlo,

Thank you very much for your words of welcome and especially the attached letter. This is just what I was looking for. So it seems the lime (forest green) bayonets have been produced much longer than I though. As the letter states, there should also be lime versions with M9 instead of M-9... interesting!

I am however a little confused by the term 'pattern' and 'product improved pattern'. Does Mr. Brett refer to the pattern of the grooves in the handle or something else? I didn't know there were differences aside from the obvious old (straight) and new (oval) types.

Furthermore. How do the OD color Ontario's with the old style handle fit into this story? It seems from the letter that the lime green M9's were produced up and until the new style handle in OD was introduced around 2005.

Kind regard,
Menno