noun
arms factory; arsenal; ordnance factory
A factory that manufactures weapons and military equipment. The term is neutral and used in both historical and modern contexts.
この町には昔、大きな兵器工場があった。
There used to be a large arms factory in this town.
戦時中、多くの兵器工場がフル稼働していた。
During the war, many ordnance factories were operating at full capacity.
Compound of 兵器 (weapons) and 工場 (factory).