guinness, my INFI Steel Heart appears to be just plain steel around the grip. This appears to be from the blades being coated, and then the handle scales being installed, and ground/sanded for final finish and fit. I've used mine on several camping outings quite a bit and haven't had any sort of rust or other corrosion rear its ugly head. I tend to wipe down the knife pretty well after use, though, but haven't used any sort of specific protective coatings or Tufcloth on it and it still looks good so far. I have been thinking about using a bit of paint or bluing to cover the bare steel, but simply haven't gotten around to thinking about it seriously yet.
------------------
Don LeHue
The pen is mightier than the sword...outside of arm's reach. Modify radius accordingly for rifle.