So in your readings, what manner of guns have you found?
I think I ran across one (which suggested this thread to me) in my re-reading of Torch of Freedom:
No ice cream anywhere in the inhabited galaxy was as good as that to be found in Muckerjee's Treats. Such, at least, was the firm opinion of Hugh Arai and every single member of Beowulf's Biological Survey Corps except the notoriously contrarian W.G. Zefat—and it was perhaps no coincidence that Captain Zefat had been sent off on what was expected to be the longest survey mission in the history of the Corps.
Just a throwaway line, perhaps...but it does allow one to wonder (and the author to have in his pocket) a return by the unknown W.G. Zefat with some critical piece of information about the MAlignment or the RF.
Might be a gun that is never fired, but certainly is available to the MWW should he decide to shoot it.
OK, any others you have noticed?