the.com/armorer

means Someone whose job is to handle, maintain, and supply weapons — historically forging armor and arms, today often managing firearms on film sets or in military and police units.

from Straight from 'armor,' which traces back through Old French 'armure' to Latin 'armatura' (equipment, arms), itself from 'arma' meaning weapons or tools of war. The '-er' simply tacked on the doer — the one who works with arma. For centuries that meant the smith hammering out breastplates and swords; the word just migrated from medieval forges to Hollywood prop trucks without changing its core job description: keep the weapons in working, trustworthy order.