Gary, you make it sound as it those aircraft had gunsights that could be toggled between air-to-air and air-to-ground mode at will, like a modern fighter.  Unless you're referring to the K-14, which was a pretty fancy sight (and not standard), I think you're wrong.  At any rate, you can't claim something outlandish and then get upset when people ask you for a source or something.  In fact, I didn't even do that, I just asked you what sight you were talking about.