An electrically powered chin turret, equipped with two M-2 .50-cal. machine guns which have hydraulic charging mechanism, has been added to B-17G
The sights are synchronized with the turret turning mechanism, but they are not automatic computing sights.
The turret itself is located beneath the bombardier's station, and is operated by the bombardier.
The earlier models of the B-17G did not have cheek guns, but they are installed on later modifications on each side of the nose.