It`s either a true arrowhead, or a well used exhausted point, that has been resharpened down to the size it is now.
What we mean by true arrowhead, is that this one was used on an arrow. We all tend to call all of them by the generic name :arrowhead", whether it is a knife blade, spear point, or atlatl point. Most of the points we all find are the latter 3 mentioned. True arrowheads are really small.