Field Upgrades are special equipment in Call of Duty: Modern Warfare. They are powerful devices that can aid the user and their team offensively or defensively, and are acquired by filling up the meter which it will do on its own and can be accelerated by earning score, similar to Specialist Weapons and Payloads from previous games.

Players can only use one Field Upgrade at a time, but can use a second one through the Field Upgrade Pro feature unlocked at level 45. In Field Upgrade Pro mode, both of the selected Field Upgrades charge at the rate of the slower of the two. For example, if Dead Silence and Stopping Power Rounds were to be selected in Field Upgrade Pro, both would charge at the rate of Stopping Power Rounds.

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