"Tony Williams" wrote:
Alan Minyard wrote

...

The F-35 is optimized for air to ground, while the F-18 and F-22 are
optimized for air to air. Different targets, different guns. The GAU-12
is also used in ground to air.

Agreed. However, every other nation obviously believes that 27-30mm
guns are nowadays the optimum for fitting to air superiority fighters
as well as for air-to-ground.

Every other nation that has "signed up" for the JSF would appear to have has
also signed up for an internal or pod version of the 25mm GAU-12/U. That
includes the UK whose current views also include that the BK-27 carried by
their Typoons is only there as ballast :-)