How to Unlock Insured Slots in Modern Warfare 3 Zombies

Then, reach reputation level five of Phalanx and complete the upgrade to the cooldown of slot one, and you'll earn a cooldown reduction of 25%

2nd and 3rd weapon slot Both slots are unlocked with a single mission similar to ones we

2nd insured slot dmz Expand the mission item and key stashes by an additional 2 slots each Complete The Reduce the cooldown of the 2nd insured slot by an additional 25%

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