An armor perk is a trait on most armor of at least uncommon rarity that must be unlocked with experience and then purchased with Glimmer and/or materials. Each rarity has more perks per armor type.
List of Armor Perks in Destiny[]
This section lacks information and needs to be expanded.
Title
Effect
Ashes to Asset
Replenish Super energy when you kill an enemy with a grenade.
Auto Rifle Ammo
Increases the amount of auto rifle ammunition you can carry.
Energy Projection
Increases grenade throw distance.
Incisive Maintenance
Causing damage with a melee attack reduces your grenade cooldown.
Innervation
Reduces grenade cooldown each time you pick up an Orb of Light.
Hand Cannon Ammo
Increases the amount of Hand Cannon ammunition you can carry.
Light the Blade
Causing damage with a grenade reduces your melee cooldown.