gun enclosure
gun turret
turret

There was a gun turret built into the side of the station.

All gun turrets of the ship were in ready position.

It has an unusual 75mm gun turret in Block 3.

This type of armor was also used to protect the gun turrets.

Already the huge gun turrets were rotating round to face them.

There had been movement in the two gun turrets that still worked.

Heinrich's head turned like a gun turret to his chief of staff.

She is very fast and has something special in automatic gun turrets.

He called to the forward gun turret: "Put one across her bow if she doesn't stop."

One writer at the time compared it to a gun turret.