Ontario M9 Sharpening Stone Question

[avslash]

Wondering if you guys can answer a question for an admitted noob. Just received my first Ontario made M9 and was surprised to see that the scabbard did not include a sharpening stone. Not a big deal to me really, I was just surprised that it was not there after reading the m9 manual posted online at m9bayonets.com. Was this feature discontinued? Why? When? Thanks for letting me know.

[Quarterbore]

Yes, the military had the stone removed because the stones were hard on clothing and they tended to break and needed replacement (or that is my understandings). I do not know when the change was made but it is a fairly recent change.