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Call of Duty Modern Warfare 3 (MW3)

How to Unlock JAK Cataclysm

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The JAK Cataclysm is an Aftermarket Parts Conversion Kit for the RPK in Call of Duty Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the JAK Cataclysm, its detailed stats breakdown, and its converted weapon.

List of Contents

How to Unlock JAK Cataclysm

Complete 5 Week 2 Challenges in Season 5

Week 2 Challenges

Players can get the JAK Cataclysm early by completing 5 Week 2 Challenges in Season 5 of MW3 Multiplayer or Zombies. The JAK Cataclysm 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

Raise the RPK to Level 19

Outside of weekly challenges, players can also unlock the JAK Cataclysm by raising the RPK to its max level of 19 and completing its related attachment challenge.

This step will be required either way as Aftermarket Part Conversion Kits can only be equipped once you have mastered its compatible weapon.

JAK Cataclysm Converted Gun

Conversion Kit for the RPK

JAK Cataclysm

The JAK Cataclysm is a full conversion kit for the RPK LMG. When equipped, it transforms the heavy LMG to a one shot, one kill Sniper Rifle (in Multiplayer). However, its biggest weakness after conversion is its slow ADS speed and erratic ADS sway when scoped in.

RPK Best Loadout and Build

JAK Cataclysm Stats

Pros and Cons

Pros Cons
Modern Warfare 3 - Major ProDamage
Modern Warfare 3 - Major ProHeadshot Damage
Modern Warfare 3 - Moderate ProDamage Range
Modern Warfare 3 - Moderate ProLimb Damage
Modern Warfare 3 - New Con FunctionNo Tactical Stance
Modern Warfare 3 - Major ConMagazine Ammo Capacity
Modern Warfare 3 - Major ConADS Speed
Modern Warfare 3 - Major ConFire Rate

Chevron count determines the effectivesness of the stat change while polygonal arrows indicate a new function being added.

Detailed Stat Adjustments

Positive stat changes are marked in Bold while negative stat changes are marked in Red.

Damage
Headshot Damage 294.0 (+500%)
Upper Torso Damage 182.0 (+333%)
Lower Torso Damage 168.0 (+342%)
Upper Legs Damage 140.0 (+268%)
Target Flinch 0.9 N
Range
Effective Damage Range 35.6 m (+26%)
Minimum Damage Range 50.8 m (-5%)
Bullet Velocity 660.0 m/s (-4%)
Fire Rate
Rate of Fire 133.3 rpm (-78%)
Recoil Control
Recoil Gun Kick 38.60 degrees/s (+100%)
Horizontal Recoil 23.29 degrees/s (+92%)
Vertical Recoil 94.08 degrees/s (+100%)
Accuracy
Hipfire Spread Min 10.0 degrees/s (+178%)
Hipfire Spread Max 14.0 degrees/s (+56%)
Flinch Resistance 0.68 N (+300%)
Mobility
Movement Speed 4.3 m/s (-2%)
Crouch Movement Speed 2.0 m/s (-5%)
Sprint Speed 5.2 m/s
Tactical Sprint Speed 6.4 m/s (-2%)
ADS Movement Speed 1.5 m/s (-37%)
Handling
ADS Speed 593.0 ms (+56%)
Reload Quickness 5.3 s (+6%)
Empty Reload Quickness 6.0 s (+5%)
Sprint to Fire Speed 325.0 ms (+30%)
Swap Speed 2030.0 ms

Modern Warfare 3 (MW3) Related Guides

Modern Warfare 3 - Attachments

List of All Attachments

Attachment Types in MW3

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

All Conversion Kits in MW3

All Related Attachments
Broodmother .45 Kit JAK Annihilator Bullpup Kit JAK Atlas Kit
JAK Backsaw Kit JAK Beholder Rifle Kit JAK Burnout
JAK Cataclysm JAK Ettin Double Barrel Kit JAK Ferocity Carbine Kit
JAK Gunslinger JAK Harbinger Kit JAK Headhunter Carbine Conversion
JAK Heretic Carbine Kit JAK Jawbreaker JAK Maglift Kit
JAK Nightshade Rifle Kit JAK Outlaw-277 Kit JAK Patriot
JAK Protean JAK Raven Kit JAK Requiem
JAK Revenger Kit JAK Scimitar Kit JAK Shadow Titan Kit
JAK Signal Burst JAK Thumper-656 JAK Thunder LMG Kit
JAK Tyrant 762 Kit JAK Volkh JAK Wardens (Model 1887)
JAK Widemouth Barrel MCW 6.8 Full-Auto Conversion Kit WSP Akimbo Brace Stock
XRK IP-V2 Conversion Kit

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