Help with Edit Object Auctuator

I have been using blender for over a year now and just started trying out BGE and it is so cool, I am making a small game and have it rigged up as a FPS. I am trying to make my gun shoot a projectile using the Add object part of the edit object auctuator. I have given it a velocity of 50 in the +x direction and it doesn’t move once it is added. I have the logic brick setup on a empty which is parented to the gun. I don’t know if this makes a difference, \

thanks

Are the bullet’s physics settings set to rigid body?

thanks, that was it. I guessed it was something simple