The JAK Backsaw Kit is an aftermarket part released during the sixth week of Modern Warfare 3 and Warzone Season 2.

Credit: Activision/ONE Esports
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Designed for the Holger 556, this aftermarket part gives the weapon the ability to fire two bullets at the same time, along with a magazine capacity of 100 per magazine to rain death upon your enemies.

However, it should be noted that by using the JAK Backsaw kit, you will be locked out of changing the following attachments:

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  • Muzzle
  • Barrel
  • Underbarrel
  • Magazine

Here’s how to unlock the JAK Backsaw Kit in MW3

How to unlock the JAK Backsaw Kit
Screenshot by Sean Low/ONE Esports

This aftermarket part can be easily unlocked by completing five weekly challenges in week six. Thankfully, these challenges are straightforward.

MW3 Multiplayer week six challenges:

  • Get 10 operator double kills with recommended SMGs
  • Get 10 operator hipfire kills with recommended LMGs
  • Get 15 operator hipfire kills with recommended assault rifles
  • Get 15 operator point blank kills with the Holger 556
  • Get 20 operator Tac Stance kills with recommended LMGs
  • Get 20 operator kills while aiming down sights with a recommended shotgun
  • Get 30 operator hipfire kills with recommended SMGs
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Warzone week six challenges:

  • In Warzone Fortune’s Keep, open 20 loot caches in the North region (Gethouse, Keep, Terraces)
  • In Warzone Fortune’s Keep, open 20 loot caches in the West region (Graveyard, Overlook, Town)
  • In Warzone Fortune’s Keep, open 20 loot caches in the East region (Konni Outpost, Lighthouse, Pier, Winery)
  • In Warzone Fortune’s Keep, open 20 loot caches in the South region (Ground Zero)
  • In Warzone, place in the top 10 five times
  • In Warzone, complete 15 contracts
  • In Warzone, get 40 operator kills or kill assists with a recommended weapon
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MW3 Zombies week six challenges:

  • Get 250 kills in full-auto fire mode with a recommended battle rifle
  • Get 150 kills with a Pack-A-Punched Longbow
  • Get 250 critical kills with a Pack-A-Punched recommended weapon
  • Get 250 kills with the Haymaker at Epic (purple) rarity or higher
  • Get five Special Zombie critical kills with a recommended weapon
  • Get 300 kills with a Pack-A-Punched Holger 556
  • Get 250 kills with a silenced recommended battle rifle

We recommend completing challenges in Multiplayer for the fastest way to unlock the JAK Backsaw Kit, as they only involve performing certain kills with recommended weapons.

Screenshot by Sean Low/ONE Esports

An efficient method to accomplish these tasks is to dive into the Das Haus 24/7 playlist.

The advantage of the Das Haus map lies in its compact size relative to other maps, guaranteeing a consistent stream of targets to help you fulfill your challenges.

Xbox gift card
Credit: Xbox

Once you have at least five challenges completed, this aftermarket part will be accessible in the gunsmith menu for the Holger 556 assault rifle.

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