Check it out:
I don't know of anyone who carries these. The photo looks like a parade model, but I'm sure they make a field-grade model like all the rest of 'em they show on the site.
Their field knives look really sweet, too. Knifecenter carries those:
Zoid, I bet one of these would fit nicely in the bayonet pocket on that Grad vest you picked up. I may very well be doing just that after I finish saving up for my new computer.
Shameless plug here, but Knifecenter has always done great by me and their prices rock.