Coming with an updated version of Call of Duty Season 4 Reloaded was an SMG new for multiplayer Black Ops Cold War, Zombies and Warzone. Players may remember Kiparis from the original Black Ops game, which returned to the series as OT 9. With a standard magazine size of 20 rounds, this SMG deals fast damage at fast speeds, with the disadvantage of its low ammunition capacity, especially compared to similar Bullfrog SMGs. . You will want to be close to enemies and consider increasing the size of the stack using attachments.
While you are able to unlock OTs 9 by purchasing its Blueprint version in the Store package, you can also earn it by completing unlock challenges in the Black Ops Cold War, Zombies and Warzone multiplayer games. Note that at the start of Season 4 Reloaded, players were unable to see challenges to unlock a multiplayer or Zombies game, and purchasing an OTs 9 pack would still neutralize the weapon during the game.
Related: How to unlock a mace in Call of Duty: Black Ops Cold War and Warzone
Multiplayer and Warzone Unlock Challenge
Warzone’s call to unlock OT 9 is “Use SMG to quickly kill 2 or more players in 15 different completed matches.” Make sure you equip any SMG you use most often with bloodshed, even if our favorites are the MP5 and AK-74u. Medals for double killing and higher will be a good indicator that you have made progress in meeting this challenge.
Remember that a challenge requires you to make a double kill in “different matches”, which means that achieving more than one double kill in a single match will still only count as one level to the challenge.
Zombies Unlock Challenge
You can also unlock OT 9 with a zombie-specific challenge – the challenge is not available in the game since this writing for unknown, probably technical reasons.