I've noticed someone else has posted this once in this thread already, but I don't think it got enough attention...
This has to be one of manly planes around.
Here are the various weapons these things fly with.
Armament
AC-130A Project Gunship II
4× 7.62 mm GAU-2/A miniguns
4× 20 mm M61 Vulcan cannon
AC-130A Surprise Package, Pave Pronto, AC-130E Pave Spectre
20 mm Vulcan cannon ammo belt
4× 7.62 mm GAU-2/A miniguns
2× 20 mm M61 Vulcan cannon
2× 40 mm (1.58 in) L/60 Bofors cannon
AC-130E Pave Aegis and AC-130H Pave Spectre II
2× 20 mm M61 Vulcan cannon
1× 40 mm L60 Bofors cannon
1× 105 mm (4.13 in) M102 howitzer
AC-130U "Spooky" Gunship
1× 25 mm (0.984 in) 5-Barrel GAU-12/U Equalizer gatling gun
(Its rate of fire is normally 3,600 rounds per minute, with a maximum of 4,200 rounds per minute.)
1× 40 mm L60 Bofors cannon
1× 105 mm M102 howitzer
or
2× 30 mm Bushmaster II cannon[10]
1× 105 mm M102 howitzer
So the AC-130 'Spooky' Gunship carries the following weapons...
1× 25 mm (0.984 in) 5-Barrel GAU-12/U Equalizer gatling gun
1× 40 mm L60 Bofors cannon
1× 105 mm M102 howitzer
Few good vids.
Dropping Flares
http://www.youtube.com/watch?v=CAFCudNNG30&feature=related
In action against terrorists.
http://www.youtube.com/watch?v=P88Rf8_lu5A