Q:What's the difference between the new Gen 3 and Gen 4 Microtech UTX-85?
A: Nothing, absolutely nothing.They are identical.Microtech decided to dedicate the Gen III badge for ZBP models only, thus they have changed the name of the newest UTX-85 Gen III to UTX-85 Gen IV. They did not make any changes to the knife. Only a few GEN III labeled UTX-85 made it to market, so if you have one, it should be great for the collection.