In Blacklight: Retribution, the player has a number of Gear Slots where additional Gear can be equipped. The number of Gear Slots is defined by the Upper Body Armor and the Lower Body Armor that the agent has equipped.
It is possible to equip Grenades, Mines, and Melee items. The maximum number of Gear Slots is 4, up to 2 for each Armor type. There is a separate type of Gear called Tactical Gear which is worn on the back. This is limited to 1 slot.