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☆ S5 Reloaded Dark Aether Keys and Locations
★ Mr. Peeks | Drum | Locked Diary | Giraffe Toy
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The JAK Harbinger Kit is an Aftermarket Parts Conversion Kit for the M4 in Call of Duty Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the JAK Harbinger Kit, its detailed stats breakdown, and its converted weapon.
List of Contents
Players can get the JAK Harbinger Kit by completing 5 Week 1 Challenges in MW3 Multiplayer or Zombies. The JAK Harbinger Kit will be added to your available attachments once you have 5 completed challenges from one of game modes.
List of All Weekly Challenges and Rewards
The JAK Harbinger Kit is a full conversion kit for the M4. When equipped, it transforms the M4 into a high-damage rifle at the cost of its rate-of-fire, recoil control, and overall stability.
| Pros | Cons |
|---|---|
 Damage |
 Fire RateRecoil ControlFlinch ResistanceGun Kick Control |
Chevron count determines the effectivesness of the stat change while polygonal arrows indicate a new function being added.
| Damage | |
|---|---|
| Headshot Damage | 110.0 (+197%) |
| Upper Torso Damage | 101.0 (+197%) |
| Lower Torso Damage | 101.0 (+197%) |
| Target Flinch | 0.8 N |
| Range | |
| Effective Damage Range | 12.7 m (-52%) |
| Minimum Damage Range | 45.7 m |
| Bullet Velocity | 720.0 m/s |
| Fire Rate | |
| Rate of Fire | 245.9 rpm (-70%) |
| Recoil Control | |
| Recoil Gun Kick | 61.38 degree/s (+210%) |
| Horizontal Recoil | 22.72 degree/s (+67%) |
| Vertical Recoil | 73.74 degree/s (+52%) |
| Accuracy | |
| Hipfire Spread Min | 2.6 degree/s |
| Hipfire Spread Max | 7.5 degree/s |
| Flinch Resistance | 0.25 N (+47%) |
| Tactical Stance Spread | 4.1 degree/s |
| Mobility | |
| Movement Speed | 4/2 m/s (-14%) |
| Crouch Movement Speed | 1.9 m/s (-14%) |
| Sprint Speed | 4.9 m/s (-11%) |
| Tactical Sprint Speed | 6.3 m/s (-10%) |
| ADS Movement Speed | 2.5 m/s (-14%) |
| Handling | |
| ADS Speed | 320.0 ms (+33%) |
| Reload Quickness | 2.8 s (+8%) |
| Sprint to Fire Speed | 231.0 ms (+10%) |
| Swap Speed | 1500.0 ms |
| Attachments By Type | |||
|---|---|---|---|
| Barrel | Stock | Ammunition | Muzzle |
| Rear Grip | Optic | Underbarrel | Magazine |
| Receiver | Laser | Comb | Trigger Action |
| Guard | Bolt | Arm | Rail |
| Carry Handle | Lever | Loader | Wire |
| Conversion Kit | |||
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