This is a VZ Grips Revolver Grip known as the Operator II, model JFW-O2-BG.
The second in the Operator series of multi textured grips designed in 2008. An aggressive Recon texture on the front 1/3 of the grip with the traditional Operator diagonal ball cuts the remainder of the way. VZ added a permanent thumb recess for quick mag changes.
Features:
Texture: Aggressive