Every GST-9 ships with this included in the same color of the frame.
Want to accent your frame with another color? Lose a grip, or want to practice stippling? This is a replacement compact size grip for the GST-9 Pistol Frame. This is a standard G19 size that will fit all but the largest shooters hands.
GST-9 Compact Grip
GST-9 Compact size Grip