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Warzone 2’s DMZ has quickly become a widely popular mode withinModern Warfare 2. In fact, some may argue that DMZ has completely overshadowed Warzone 2 itself, due to its appeal to both hardcore and casual players. DMZ features an array of different rewards that players can obtain and use in other modes. These include the M13B Assault Rifle, the Chimera Assault Rifle, the Caution Tape Weapon Blueprint, and theSilver Tox Weapon Blueprint.
Related:Modern Warfare 2 & Warzone 2 Chimera Assault Rifle: How To Unlock & Best Attachments

The Silver Tox is a blueprint variant of the Chimera Assault Rifle, pro-tuned for sprint-to-fire speed and target flinch. This close-ranged AR build features the following attachments: the 7MW CANTED LASER, the DEMO FIRM GRIP underbarrel, the D37 GRIP rear grip, a 20 ROUND MAG magazine, and .300 OVERPRESSURED +P ammunition. The Silver Tox Blueprint isunlocked by extracting with the Building 21 Weapon Casefor a total of6 times.
Preparation
For players looking to get the Silver Tox Chimera Blueprint in Modern Warfare 2, you must first be equipped to take on everything Building 21 has to offer. You will have limited deployments into Building 21 depending on the number ofDRC Building 21 Access Cardsavailable in your inventory, thus making the stakes that much higher. With that being the case, consider our below tips to prepare for the worst.
Related:Modern Warfare 2 M13B Assault Rifle: How To Unlock & Best Attachments

Getting The Building 21 Weapon Case
Right as you spawn into Building 21, it is important to remember to be on guard for other enemy players, as you will typically spawn within the vicinity of another team. Loot up in the immediate area you spawn into for Armor Plates and other valuable items, then wait for thematch countdown timer to reach 11 minutes. This is when theServer Room will open, which is a crucial step for getting the Silver Tox Blueprint.
You will need to make your way to theServer Roomlocated on thebasement level of the map. Once here,locate the required terminal and hold interact to hack it. Once the hacking process begins, enemy AI will start to push your location. Ensure that two players in your squad are defending and fortifying the area, while the remaining member hacks the terminal. After you have finished hacking the Server Room, you will see an onscreen alert informing you that theArmory has been opened upstairs.

Explosives like Semtex and Frag Grenades are great for taking out clusters of AI in tight areas such as corridors and staircases. However, they do make a racket, thus alerting other players of your presence.
Now you will need tohead to the Armory, which islocated on the top floorof Building 21. It can be identified as a room with a wooden office door that has a no-trespassing warning sticker next to it. On your way there, ensure to be cautious of AI and players. Most importantly,avoid the Wilson robot bosspatrolling the top floor. Once you have reached the Armory, you may go ahead and loot the Legendary Supply Boxes before moving on to the next crucial step. Here you will have todrill into a Safe, which contains aWeapon Case. During the drilling process, AI will begin moving over to your position. Ensure all members of your squad focus on defending the area.

Once you have cracked open the safe, you can open it up andtake the Weapon Casefrom inside. However, enemy players will be able to track the location of the player holding it. Converse with your squad and ensure that everyone is stocked up on heals, ammunition, and armor plates before taking the Weapon Case. It is also recommended that you do not take the Weapon Case until there are 7 minutes or less remaining on the match timer, as this is the point where the Exfil Elevators are opened.
Now you will need tohead to the Exfil elevatoras a squad, being cautious of enemy players and AI along the way. Once at the elevator you cancall it in with the interact buttonand wait for a countdown for it to arrive. All that is left now is to jump into the elevator at the first opportunity you are given, defending the area right until the doors close.

Do not worry all too much if members of your team are eliminated at this point. If the squad member holding the Weapon Case successfully extracts, then the progress will count for all teammates regardless if they are alive or not.
You will have to successfullyextract with the Weapons Casea total of6 timesto obtain theSilver Tox Blueprint.