Translation guide
A person who makes or repairs armor. In Japanese, this is typically expressed with compound nouns using 職人 (craftsman) or 師 (master), depending on context and historical period.
He is researching medieval armorers.
Specifically a maker of 甲冑 (armor and helmet). 師 implies a master or specialist. Often used for traditional Japanese armor craftsmen.
This armorer is restoring armor from the Warring States period.
A shorter term for an armor master. Less common than 甲冑師 but still used in historical contexts.
He made a name for himself as an armorer.
Referring to a person who maintains and repairs small arms and other weapons in a modern military context.
Literally 'firearms maintenance technician'. This is the standard term for a modern military armorer who works on guns.
He works as an armorer in the Self-Defense Forces.
Weapons maintenance personnel. A broader term that can include armorers but also covers other weapon systems.
Referring to an armorer as a character class or shopkeeper in RPGs or fantasy settings.
The direct katakana loanword アーマーラー is not commonly used or understood in Japanese. Stick to the native compounds above.
The armorer inspected the rifles.
I commissioned a custom armor from the armorer.