Designed for Tippmann markers with the cyclone feed system on them that are cycling faster due to electronics and other upgrades. New Designz decided to improve the feeder cylinder and here is their new EVT Extreme Vent Technology housing.What will this do for your gun, you ask?Testing confirms a net velocity increase at the chrono, super fast cycling using EVT, early venting which returns the piston assembly thatmuch sooner . Extreme Vent Tech also offers venting in multiple stages. Matte finish that matches your marker. This housing will fit any Tippmann marker with a Cyclone feed system installedNOTE: Shown on the cyclone feed system which is NOT included.