Pretty sure it's partial tang, it ends right after the 3 bolts. I don't own this one, but I do have the SOG Fasthawk, which is mounted in a similar fashion. Of which, I've beat the hell out of, thrown it, and it has suffered no damage. OTOH, I would not depend on it, as in military use.
As an introduction to hawks maybe it's okay. I would have more faith in a hickory hafted traditional hawk, which I could replace if I did manage to break it. Also, it seems as if hickory hafts only break because they get thrown, not from "normal use", but I could be wrong.
If you need, or want, a full tang hawk, for hard use, for around $100, maybe look at the Ontario RD Hawk. I own one, and it's very tough, not great for chopping wood or camping chores though. It can dish out and take abuse.
IMO, there are some trade offs to the full tang hawks, weight being one major factor. Tapered tangs or lightening holes can change the balance point and make the hawk lighter, but you pay for that labor up front, $$. Something like the RD hawk is heavy in the handle, the mass distribution of this hawk is not so great. It's made as a breaching tool, not a balanced fighter, but would still do damage if used as such. I'm just saying that sometimes you get what you pay for. A better balanced full tang hawk will cost you more money. For less than $100, you can get a great traditional hawk, and be able to replace the haft. Maybe it all depends on what you want the hawk to do? What reason do you want a hawk, do you want it to be full tang?