The Smart Parts Freak System is designed to fit any size paintball. The Freak has been designed to suit the needs of the professional player in any situation; by changing the relevant barrel components. All parts of the Freak barrel system are interchangable for all conditions. Different inserts for different size paints, different fronts giving different lenth and colors and Freak backs to suit your style of marker This complete system adjusts from .679" - .695" using the supplied barrel inserts. The Full Freak Kit comes with eight inserts , Freak Back with choice threads to fit for your gun and a Freak Front with length to desire. The Front comes in Black, Red, Blue and Silver. The Freak Back comes in Black only.