Warzone 2 features a number of interesting gameplay elements which reward the player for taking on challenges and successfully completing them. AI-controlled locations like Black Sites and Strongholds give players a number of rewards for clearing them out in Call of Duty: Warzone 2. Of the two marked locations, Black Sites are more dangerous and reward players with some of the most valuable in-game items for clearing them. You’ll need to obtain a key to the Black Site in order to access it, while Strongholds can simply be cleared out. Here is how you can open Black Sites in Warzone 2 and redeem the exclusive and free Vaznev-9K submachine gun blueprint as a reward. 

How to open Black Sites in Warzone 2

Black Sites are AI-controlled, high-risk, high-reward areas on Al Mazrah which yield high-tier loot and in-game items. These locations also usually spawn a Juggernaut when you get there so be prepared for a boss fight. You’ll find these areas marked on the map with a specific icon.

You’ll need to find a key to unlock Black Sites in Warzone 2 before heading there. Players will need to first head to a Stronghold and defuse a bomb to obtain a key to the Black Site. Note that if you arrive at a Stronghold after another team has already cleared it out, you won’t be able to access the Black Site key, so make sure you’re the first ones to get there. Once you obtain the Black Site key, head to its location, marked on the map, and unlock it. 

You can also unlock a free weapon blueprint located in the Warzone 2 Black Sites. Once you’ve cleared out all the enemies around the black site you’ll need to fight the Juggernaut who will drop an exclusive Vaznev-9K submachine gun blueprint in DMZ mode.