Actually it is Spectre. It's name comes from its original call sign. Originally the AC-47D, not the huge big bird used now (AC130), the C-47 had two General Electric "mini-guns". One on each side of the bird. As the ship banked it could direct fire at the ground. It's radio call sign was "Spectre four seven Actual" in the very early days of its existence. There were also two M-60s mounted in forward firing compartments that individual gunners manned.
Todays AC130 Spectre is a highly advance computerized gun platform. Like the difference between a Matchlock and the present day Gatling gun.
Just some cheap info folks -