GOG Freak XL Barrel Front Straight Ported 16 Inch Black DustThe linear porting of the Freak Front guides the paintball to its flight path with air pressure in front of and behind the paintball to equalize for a smoother transition to its final trajectory. The linear porting arrangement dissipates turbulent air quickly and efficiently to prevent paintball deformation and insure shot after shot accuracy. This barrel front works only with a Freak XL barrel back.