The C9 (MP5) has been and always will be a viable choice no matter the iteration of Call of Duty. That remains true in Black Ops 6. While it’s not the absolute best submachine gun, if you’re good enough, you can make it look like it is. And to do that you’ll need to equip the right attachments. Below is a guide to help you turn this average SMG into one of the best weapons in the game.

Gunsmith

• Muzzle: Ported Compensator
  Controls recoil, enhancing both accuracy and stability.
• Barrel: Reinforced Barrel
  Extends your range, allowing for more consistent performance in medium-range fights.
• Underbarrel: Ranger Foregrip
  Helps with horizontal recoil and sprinting speed.
• Rear Grip: Ergonomic Grip
  Improves mobility with faster sprint-to-fire, slide-to-fire, and dive-to-fire speeds.
• Fire Mods: Recoil Springs
  Boosts accuracy, making the weapon well-rounded and reliable.

Why These Attachments Work

• Muzzle – Ported Compensator: A must-have for stabilising the C9’s recoil, helping you stay on target during intense firefights.
• Barrel – Reinforced Barrel: Gives the C9 a bit more range, allowing you to confidently take on mid-range enemies.
• Underbarrel – Ranger Foregrip: Just an overall good attachment as it increases sprinting speed, so you’re able to manoeuvre around the map faster. And horizontal recoil so that you’re able to challenge longer-ranged gunfights.
• Rear Grip – Ergonomic Grip: Prioritising mobility, this grip ensures the C9 is always ready for fast-paced action, letting you fire quickly after running, sliding, or diving.
• Fire Mods – Recoil Springs: Despite having all the previous attachments, the C9 still has quite the kick to it. This attachment reduces both vertical and horizontal recoil making it a bit easier to challenge folks at range or if they’re holding a head glitch.

Whether or not the C9 gets tweaked in future updates, this setup will give you an edge in the fast-paced, close-quarters combat.