Red Safe Code in Call of Duty: Modern Warfare

In Call of Duty: Modern Warfare (2019) and Warzone, the “Red Safe Code” is the three-digit combination you enter to open the red keypad safe found in the Armory of the single-player mission “Going Dark.” The code is 3-7-4, and it unlocks the safe that contains the weapon blueprint “Old Faithful” (a .50 GS pistol) and the “King” blueprint for the AX-50 sniper rifle.

Background: Where the Red Safe Appears

The red safe is part of the campaign mission “Going Dark,” where you and your squad infiltrate a Russian military base to retrieve a chemical weapons prototype. The safe sits inside the Armory building, which you reach after clearing the exterior and entering through the roof. The mission gives you a hint about the code via a whiteboard in the same room, but many players miss it during the fast-paced firefight. The safe is optional, but collecting its contents contributes to the “Best of the Best” achievement/trophy for completing all three optional objectives in the campaign.

How the Safe Code Works

The safe uses a standard three-digit keypad. You approach it, press the interact button, and then input the digits in order. The game does not require a confirmation button; the safe opens automatically once the correct sequence is entered. If you enter a wrong digit, you can simply re-enter the entire code—there is no lockout penalty. The code is always 3-7-4 in every playthrough, regardless of difficulty or platform. It is not randomized, so the same code works for all players.

How to Find the Red Safe

To reach the safe, follow these steps during “Going Dark”:

• After the initial stealth section, you enter the base through a ventilation shaft.
• Proceed to the Armory building, marked by a yellow objective icon on your HUD.
• Inside, clear the room of enemies. The safe is against the back wall, next to a desk with a whiteboard.
• Look for a red metal box with a keypad—it is easily distinguishable from the green ammo crates.

If you are playing on a higher difficulty, the enemies may be more aggressive, but the safe location remains the same. Use a silenced weapon to avoid drawing attention while you enter the code.

What You Get From the Red Safe

Opening the red safe yields two weapon blueprints:

• Old Faithful – a .50 GS pistol blueprint with a unique camo and attachments (lightweight suppressor, 5mW laser, and a reflex sight).
• King – an AX-50 sniper rifle blueprint with a thermal scope, suppressor, and extended mags.

These blueprints are usable in multiplayer and Warzone if you have unlocked the base weapons. They are not exclusive to the campaign; they appear in your armory as cosmetic variants. The blueprints do not provide any gameplay advantage beyond the attachments they come with, but they are a nice collectible for completionists.

Common Mistakes and Misconceptions

One common mistake is confusing the red safe with the green safe in the same mission. The green safe, located in a different building, requires a code that you find on a laptop. The red safe code is always 3-7-4, but some players think it changes based on difficulty or platform—it does not. Another misconception is that you need to find a note or document to get the code. In fact, the whiteboard in the Armory shows the code, but it is easy to overlook because it is in plain sight. If you miss it, you can still enter the code directly; the game does not require you to have “discovered” it.

Frequently Asked Questions

Is the red safe code the same in every playthrough?

Yes, the code is always 3-7-4. It is not randomized, so you can use it on any difficulty, on any platform, and in any new game plus run.

Can I get the blueprints if I miss the safe?

No, the blueprints are only available from the safe. If you miss it, you would need to replay the mission via the mission select screen. The game saves your progress after completing the mission, so you can go back and replay “Going Dark” to open the safe and keep the rewards.

Does the red safe appear in Warzone?

No, the red safe is only in the single-player campaign mission. Warzone has its own safe mechanics, but they are unrelated to this specific code.

What if I enter the code and nothing happens?

Make sure you are interacting with the correct safe. The red safe is in the Armory, not the green safe. Also, ensure you are close enough to the keypad and that the prompt appears. If it still does not work, try restarting the mission or checking for a game update.

Are the blueprints worth getting?

If you enjoy using the .50 GS or AX-50, the blueprints give you a unique look and ready-made attachments that you might not have unlocked yet. They are not overpowered, but they are a nice bonus for collectors.

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