How To: Use the Hardline Pro perk in Call of Duty: Black Ops multiplayer

Use the Hardline Pro perk in Call of Duty: Black Ops multiplayer

The Hardline Pro perk in Call of Duty: Black Ops multiplayer mode will let you switch out care packages by tapping the X button twice instead of having to hold it down. You can also use it to switch out your teammates' care packages, too.

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