Heavy Duty

Upgrade Station: Gear Station
Heavy Duty increases total armor slots to two at Rank 1 and three at Rank 2. It also increases your armor reserve capacity to a max of four at Rank 1 and to six at Rank 2.
You will want to snag this perk as soon as you can. Armor plates are scattered throughout the Black Ops 6 campaign, and they’re extremely helpful at absorbing damage that would otherwise be dealt to your health bar. Keep as many of them on you at a time as possible, and don’t forget to equip new ones when they’ve been depleted.