Have seen a gun ship with 5 GE guns in it...way back in 1967 i think it was...in a C-117 if I remember correctly.. It had ammo trays or whatever you would call them. 10 second burst lightened the load considerably. Just the brass falling out of the plane woulda had to hurt if it hit ya. BTW it was awesome to see fired at night. Looked like a river of fire you could almost walk on.