jww66It's an exclusive for Drop, if you like the design but want a different steel go to bradfordknives.com, they rock. I've got a full flat M390 G3 and a Vanadis 4E G3 sheepsfoot, both with Armatus Architect sheaths. I need to tighten up the M390's sheath a bit, but the newer one I got for the sheepsfoot is perfect.