Bill's modified Syrian PZ IV moddedto made it look as if has been hit. I used an old smoker unit to make the flashes seem a bit more radom. I origianlly thoughtthe clicking would sound likethe popping off of ammo, but that did not turn out to well.
Bill found some really great model RR smokers that really put out a cloud. I hooked everything to micro-switchs so when the turret rotates the effects are activated.
Works pretty good.
Don
http://www.youtube.com/watch?v=t9rw1RlALOw