Right now, the F-35’s software doesn’t support the use of the aircraft’s GAU-22/A four-barreled rotary cannon. The weapon was developed from the U.S. Marine Corps’ AV-8B Harrier II jump-jet’s GAU-12/U cannon, but it has one fewer barrel and weighs less.
It’s also supposed to be more accurate—when it can be fired, that is. The gun can shoot 3,300 rounds per minute, though the Air Force’s F-35A version can carry just 180 rounds for the gun....
-bth: a similar situation occurred in Vietnam when it was said that modern fighters might not need machine guns since there was no such thing as close air to air combat. Of course this was total bullshit, then as now. The F35 isn't fast enough to run away and its not stealthy enough to fully hide. It will have to fight and with 180 rounds its an insult to the pilots sent to fight and the incompetence of the US military for cobbling this monstrosity together and calling it a fighting weapon. Shame on our military leadership and its corrupt political leaders that allow this to happen. It will cost lives and diverts resources from more productive initiatives better than any foreign enemy could ever do.