I think the Rat Trap was released a few years ago. It's a great blade (I'm carrying mine now), but they are not that easy to get. They are only available on the secondary market and you should expect to pay in excess of $200 for a mint one. I love mine, my only issue is that it is not tapped for tip up carry. They can be modded for tip-up, but it should have been an option from the factory.