I don't know. The handle is very close to a combat knife but without the big flat pommel on the end. Less exaggerated grips. Almost like its a clone of a real knife scaled up by the props department then given a rubber blade for safety.
I'm still digging as I have time for better frames of the blade for scale and shape. And going to have to run them through Photoshop to enhance coloring to draw out the detail. Being as its only out for a little bit in a couple fast action scenes, then he never wears it, then he does...
Funny to watch a scene slowly... It's in his hand... back in the shoulder... change camera... in his hand... change camera, still in the shoulder... change camera, now its just gone.