- "Pump-action ballistic shotgun. 12 gauge terrestrial ammo provides superior stopping power, while the integrated choke increases ADS accuracy."
- — Description.
The Rack-9 is unlocked at level 47.
The Rack-9 Smoothbore variant was updated to increase its one shot kill potential at mid range to the lower torso and upper arms on February 3rd, 2017.
- ELO - Weapon level 7
- Smart Shot - Weapon level 10
- Extended Mag
- Laser Sight
- Quickdraw - Weapon level 5
- Suppressor - Weapon level 6
- Rifled Barrel - Weapon level 8
- Foregrip - Weapon level 9
- Stock - Weapon level 11
|Guerilla[sic]||File:Rack-9 Guerilla MKII Supply Drop Card IW.png||200|
|Precision Strike||File:Rack-9 Precision Strike MKII Supply Drop Card IW.png||500|
|Rebel||File:Rack-9 Rebel MKII Supply Drop Card IW.png||N/A||Quartermaster Collection|
|Volatile||File:Rack-9 Volatile MKII Supply Drop Card IW.png||2000|
|Godsend||File:Rack-9 Godsend Supply Drop Card IW.pngFile:Rack-9 Godsend MKII Supply Drop Card IW.png||2000|
|Radioactive||File:Rack-9 Radioactive Supply Drop Card IW.pngFile:Rack-9 Radioactive MKII Supply Drop Card IW.png||N/A||Quartermaster Collection|
|Smoothbore||File:Rack-9 Smoothbore Supply Drop Card IW.pngFile:Rack-9 Smoothbore MKII Supply Drop Card IW.png||File:Slug Gun Perk Icon IW.png||4000|
|Firebug||File:Rack-9 Firebug Supply Drop Card IW.pngFile:Rack-9 Firebug MKII Supply Drop Card IW.png||File:Incendiary Ammo Gun Perk Icon IW.png||N/A||Quartermaster Collection|
The Rack-9 is available in Zombies mode from the Magic Wheel for 950 points. It is unlocked for customization at level 36. The weapon deals high damage with the downside of the slow reaload, but you can cancel it when shooting while reloading. From the damage perspective, the Rack-9 is one of the strongest non wonder weapons across all zombies (It seems to have the same damage as the KSG) killing zombies in one shot until 35 when fully upgraded. The Firebug variant leaves an extra fire damage per second effect (like the Fire Arcane Core) while keeping the high damage. The Smoothbore transforms the Rack-9 into a one shot long range shotgun.
|Extras||Larger magazine, more ammo, reloads two shells at once||Larger magazine, more ammo|