This is the states I have for a rapid fire gun, and will probably be of use to you.
stateName[0] = "Activate";
stateTimeoutValue[0] = 0.15;
stateTransitionOnTimeout[0] = "Ready";
stateSound[0] = weaponSwitchSound;
stateName[1] = "Ready";
stateTransitionOnTriggerDown[1] = "Fire";
stateAllowImageChange[1] = true;
stateSequence[1] = "Ready";
stateName[2] = "Fire";
stateTransitionOnTimeout[2] = "Smoke";
stateTimeoutValue[2] = 0.14;
stateFire[2] = true;
stateAllowImageChange[2] = false;
stateSequence[2] = "Fire";
stateScript[2] = "onFire";
stateWaitForTimeout[2] = true;
stateEmitter[2] = gunFlashEmitter;
stateEmitterTime[2] = 0.05;
stateEmitterNode[2] = "muzzleNode";
stateSound[2] = gunShot1Sound;
stateEjectShell[2] = true;
stateName[3] = "Smoke";
stateEmitter[3] = gunSmokeEmitter;
stateEmitterTime[3] = 0.05;
stateEmitterNode[3] = "muzzleNode";
stateTimeoutValue[3] = 0.01;
stateTransitionOnTimeout[3] = "Ready";
stateName[4] = "Ready";
stateSequence[4] = "Ready";
stateTransitionOnTriggerUp[4] = "Ready";
stateSequence[4] = "Ready";