Nice video but they failed to replace the Bofors gun so it's not really up to date.
Can't believe the US would make such a poor mistake integrating a new weapon but I guess it looked good on paper.
----------
In 2007, the Air Force modified four AC-130U gunships to use as test platforms for the Bushmasters. However, Air Force Special Operations Command has canceled its plans to install 30 mm Bushmaster cannons on its fleet of AC-130Us and has since removed the guns and re-installed their original 40 mm cannons, returning these planes to combat duties.
http://en.wikipedia.org/wiki/AC-130
Officials and gunship crews are not sure why the weapon will not shoot straight. Some possible reasons are that the 30 mm rounds are too small to fly straight and accurate over long distances, after all, the cannon was never intended to shoot thousands of feet up in the air. Another possibility accounting for the weapons inaccuracy is the weapons mountings are not stiff enough for the rapid-fire chain guns, according to Heithold.
http://www.nwfdailynews.com/----
The first single engine GE F414 jet: