This one is actually pretty interesting. The scene in which they were carrying weapons was sometimes cut from the tv versions of the film, mostly due to time and advertising. My oldest sister remembers scarecrow having a gun when she first saw it on tv, but I remember when she watched it with me years later, she remarked that some scenes had been cut out. Also, the gun is a really obvious fake looking prop with no barrel, so it's easy to ignore it or mistake it for something else. I think that may also contribute to the memory mistakes.