He left the house alone, went to the armourer's and got some pistols which he loaded.
他一个人离开了房子， 去了军械商那里， 拿了几支手枪上了膛。
国富论（一）
From a regard to his own interest, therefore, the making of bows and arrows grows to be his chief business, and he becomes a sort of armourer.
因此，出于对自己利益的考虑， 制造弓箭成了他的主要业务， 他成为了一种军械制造商。
英语百科
Armourer
Historically, an armourer is a person who makes personal armour, especially plate armour. In modern terms, an armourer is a member of a military or police force who works in an armoury and maintains and repairs small arms and weapons systems, with some duties resembling those of a civilian gunsmith.