The Tippmann Stormer is made from a lightweight and high impact composite material. There are three models - the Basic, Tactical, and Elite. All three models are .68 caliber and feature semi automatic shooting using the High Performance in-line bolt system. We like these markers for several reasons. First, they are made by Tippmann! So you know they are going to work and shoot great. These are based off the Tippmann Cronus and TMC platform which we have sold for many years and customers are always happy with them. The Tippmann Stormer paintball markers are also priced very low. You get a lot for your money with the Tippmann Stormer line up. Now all you have to do is choose which model to get!