Yes, they certainly are, I wanted one, and searched Ebay for years, they are rarely up for sale. Found one at a Pawn shop for a steal! They do have steel liners under the aluminum. they are EXCELLENT knives, and might be worth a bit on down the road. They quit selling the EXCELLENT "Ultra-Lock" version, and they claim the new, liner-less ones are stronger! Uh, I don't know about that, aluminum and steel, versus liner-less G10, hmm. They are better, in my opinion than the new ones, and I carry an old G10 AK-47 as one of my EDC'c, it is smoothed out so well that I can "flick" it open with the "Ultra-Lock" by inertia! I would like to know which lock is stronger, the TRIAD or the Ultra-Lock, but I think it is not that simple. The older ones have steel liners and therefore are reinforced better, the new ones may have the ultra-Lock, but since they are not steel reinforced, the potential superior strength of the TRIAD isn't fully realized. At least that is my opinion, based on 25+ years of daily knife carry and use (abuse once in a while!)