Originally Posted by
Pontius Navigator
OAP, that might seem obvious but not necessarily true. I can't remember the F4 but think there was some issue with AIM7.
Winchester isn't the issue but balance might be for carriage of other stores.
No particular issue with weight and balance at any fuselage station, nor are they required to help offset wing stores. The forward right is rather close to the gun vibration / acoustics, which is pretty much the only consideration if you don't need a full missile fit.
If a missile is fitted it can only be for defence.