A new season in Modern Warfare 3 means a whole new set of Aftermarket parts to unlock and equip on various weapons in the game.
How to unlock the JAK Harbinger Kit in Warzone and #MW3 #modernwarfare3 || by borntoplaygames
The JAK Harbinger Kit takes a classic CoD weapon and completely transforms it, replacing the normal magazine and ammo with something much more powerful. But there are big compromises when it comes to rate of fire and other stats.
Here's everything you need to know about the JAK Harbinger Kit in MW3 and Warzone.
The JAK Harbinger Kit is an aftermarket part and conversion kit for the M4 assault rifle in MW3 and Warzone.
