[jki275]

The vietnam era missiles were really bad missiles with a really bad pk. Lack of a cannon wasn't the problem, and adding one wasn't the solution. Fixing crappy missile technology was the solution.

I don't think there's been an air to air gun kill in four decades, maybe five (US at least). Essentially all air to air combat is with missiles, to the point two of the three JSF variants don't even have a built in cannon and will likely almost never fly with the gun pods they are building for them.