SRC Pistol Power Up Suppressor (14mm-)This lightweight Aluminum power up suppressor not only adds styling points to your pistol, but also contains an extended inner barrel, pushing your pistol's FPS higher. A good way for players with green gas magazines to get a little bit more velocity for outdoor season without having to buy new CO2 magazines! IMPORTANT NOTE: "Power up" feature only works with pistol who's inner barrel are fixed (not moving back and forth). Power up inner barrel is