For the perk with a similar pro effect from Call of Duty: Black Ops, see Scavenger (perk). For the map from Call of Duty: Black Ops: Declassified, see Surplus (map). "Extra mags and grenades." — In-game description. Surplus is a tier 3 perk that appears in Call of Duty: Black Ops Declassified. it gives the player extra starting ammo and grenades, but does not give the player full reserve ammo for their weapons.