In Modern Warfare 3, the JAK Backsaw kit is an aftermarket attachment tailored for the Holger 556 Assault Rifle (AR), offering an exclusive enhancement.It serves as a conversion kit, fundamentally ...

How to unlock the JAK Backsaw Kit in MW3 and Warzone. Before bursting your way onto the scene, you must complete any five of the challenges listed below to release the latest attachment.

The JAK Backsaw kit Aftermarket part in Modern Warfare 3 can be currently unlocked via the Armory challenges in Season 4. Once you have reached level 25, the Armory Challenges will be unlocked.