The Combat Machine is a entry level rifle that provides high performance at a good value. The body and the rails are made from a high impact polymer to ensure a lightweight stable platform with fantastically great design. The power is around 330fps and it has a full metal version 2 gearbox with 8mm bearings. The battery is a nun-chuck style battery that goes in the stock and is not included. This is the new model with mosfet included!