The Ontario M-9 bayonet, which apparently is priced around a $100, is not something I would have need for, nor consider buying. Perusing ebay, as I have been known to do, I happened to look at an auction for one of these things and was surprised that this "100 dollar" knife is 420 stainless. Not what I would have picked to stake my life on, but I guess it is relatively tough. Had I been designing the bayonet I think I could have come up with a better choice for $100, tho' I'm not positive what it would be.