AC-130H Spectre

Howitzer in an airplane!! Who could ask for more?

Armament:
two M61 20mm Vulcan cannons with 3,000 rounds
one L60 40mm Bofors cannon with 256 rounds
one M102 105mm howitzer with 100 rounds
One 25mm GAU-12 Gatling gun (1,800 rounds per minute)
one L60 40mm Bofors cannon (100 shots per minute)
one M102 105mm cannon (6-10 rounds per minute)


http://www.fas.org/man/dod-101/sys/ac/ac-130-int.gif

http://www.fas.org/man/dod-101/sys/ac/ac130_04.jpg

http://www.fas.org/man/dod-101/sys/ac/ac-130-dll.jpg

http://www.fas.org/man/dod-101/sys/ac/ac-130-spectre-44.jpg