ARM meaning in Governmental ?

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. There is increasing evidence that companies specializing in the manufacture of armoured vehicles or applique armour for application onto vehicles of all types (cars, boats, aircraft) are referring to themselves as armourers; such as the UK company OVIK Crossway - which describes its services as Armourers and Coach Builders. In some ways, this is a reversion back to the original meaning of the term insofar as these companies forge, adapt or integrate physical armour onto platforms in order to protect human life.

The title is also used in Olympic sport of fencing (the foil, the épée and the sabre) to refer to those who repair fencers' weaponry, safety equipment, fencing-strips, scoring machines, and reels. At sport-fencing events, the individuals responsible for checking equipment safety and maintaining the strips, reels and scoring machines during the tournament are also known as armourers.

With the renewed interest in traditional armour and weaponry the occupation also involves working with film, stage, and historical and reenactment societies. Period costumes may require reproduction armour, swords, and related equipment. The HEMA (Historical European Martial Arts) movement has also revived a more traditional expression of armoury as a skill.