Best ISO 45 SMG Build Warzone Season 4

Check out the best ISO 45 SMG build here.
Check out the best ISO 45 SMG build here. / Activision

The best ISO 45 SMG build gives players a solid secondary option in Call of Duty: Warzone Season 4.

Warzone Season 4 launched with three new weapons, along with new map, Vondel. As players explore the city set in the Netherlands, they can try out the ISO 45 SMG, Tempus Razorback Assault Rifle, and Tonfa Melee weapon.

The ISO 45 and Tempus Razorback can be unlocked for free in the Season 4 Battle Pass and leveled up quickly, especially in Vondel Resurgence matches. Those who purchase the BlackCell Battle Pass can use their 20 tier skips to instantly obtain the ISO 45 to see how the new SMG measures up in the current meta.

Here's a breakdown of the best attachments and tuning for the ISO 45.

Best ISO 45 SMG Build Warzone Season 4

The best ISO 45 SMG build in Warzone Season 4 is as follows:

  • Muzzle: Lockshot KT85 (-0.44/+0.15)
  • Laser: VLK LZR 7MW (-0.48/-47.71)
  • Stock: SK-3 Cheetah (-2.06/-1.08)
  • Rear Grip: EXP Shear (-0.45/-0.17)
  • Magazine: 45 Round Drum

Although the ISO 45 is not as good as the Lachmann Sub, the gun is still an effective choice with the right attachments and tuning. The 45 Round Drum gives you plenty of ammo to combat the increased player health in Warzone Season 4, now raised to 150.

EXP Shear and SK-3 Cheetah also deliver faster ADS speed for a slight loss in recoil control. Fortunately, the Lockshot KT85 gives you better consistency with increased vertical recoil control to combat the other attachments.