These inexpensive foamies provide a great introduction to combat fun.
http://64.33.154.92/blackdogrc/parkflyers.jsp?c=1138716

Building your own foamie? BlackdogRC has inexpensive outrunners.
http://64.33.154.92/blackdogrc/motorGrid.jsp?c=9089724

Here is a thread on BlackdogRCs customer service.
http://www.rcgroups.com/forums/showthread.php?t=567233