Main system turret
There is no turret on the arcade version's main system.
|Areas||3, 7, 8, 9, 10, 12|
The main system turret is also found on the power system of area 12.
|Areas||10, 12, 16|
The Game Boy version has two different firing styles. The turret first shoots in area 10 similar to the way Joe's machine gun fires. Three bullets are shot out one right after the next in a small angled area. The second firing type is like the wide cannon which occurs in area 12 and area 16.