Paintball Marker Terms & Conditions The new Tippmann Stormer is a completely modular .68 calibre marker for all levels of play. The Stormer Series is available in 3 models allowing full customization. The Stormer Elite allows you to switch between the loader and mag-fed configurations offering several different looks to switch between. Product Features: Dual Feed modular design that can be convert to be hopper or magazine fed and different looks High-impact composite body Internal gas line Multiple Picatinny Rails Vertical Grip Proven, in-line bolt design High-Performance Barrel Bottom mounted asa Single Trigger Offset Feedport Includes Tactical Front Shroud, Front and Rear Flip-Up Sights, 6 Position Collapsible Stock, Dummy Magazine, 2 Paintball Magazines and Loader to Magazine conversion parts Marker Info What gas can I use? HPA & Co2 What is the barrel thread size? 98 Custom What calibre does it take? .68cal