That's a Desert Jack variation. You can find Desert Jack on the exchange occasionally but they are somewhat pricy.

From the Swamp Shack:

Desert Jack - Released 2005

These are part of a small military overrun and will only be available for a very short time. . . Sheath is not included. The Desert Jack has an overall length of 11.5” and features a 6” blade of 3/16” thick differentially hardened SR-101. The handle is Tan Canvas Micarta. These were released just prior to the opening of the Company Store.