The black one is the knockoff, that's the handle portion I assume is casted? Or am I wrong?

The OEM silver one had that badly on one side of the blade, which is the side I've been working on to thin the profile, so I have no photo for it.

Edit: yes, it's very magnetic... Fuck me. I guess it's only good for stabbing? Regardless I'm going to keep destroying this oem one lmao. Finish thinning the blade to a point and attempt to add serations.