I have one of the mini Kabars. They are actually letter openers. They are not designed or sold as actual working blades. I can put an edge on it but it will only last opening one or two boxes when they arrive at the shop.

The steel in the original Kabar is actually quite soft so it can be sharpened in the field easily and quickly. I have the one issued to my father in WWII and the one issued to me in Viet-Nam. Both are good for what they were designed for but not up to the standards of today's civilian working knives.