Firing My Weapon In UDK

This is an extra credit projects for the Programming For Artist class, which we are asked to set our character as the default character in UDK and make them shoot their weapon. I followed a tutorial that is made by our professor, the particles and sound effects are from UDK. For some reason, the new gun does not show when I switch to 3rd person, but everything else work fine, here is a video about it: