ammunition chamber

The German officer's servant, it appeared, had managed to gain entrance to the ammunition chamber by means of a false key to the outer door.

It was accessible from both the front and back of the armored car, Downer pushed the dead guard against the cab door and opened the panel that accessed the ammunition chamber.

On 8 May 2012, the Bombay High Court granted permission to the Indian Navy to decommission and destroy the ship after one ammunition chamber could not be emptied.

I heard the explosion as shattering metal: a pressurized ammunition chamber filled with flammable gas or acid that was breached by a bullet and burst its deadly payload into the world.