The JAK Widemouth Barrel is an Aftermarket Part inMW3andWarzonefor theMORSthat transforms the railgun sniper into a blunderbuss, and thankfully it’s fairly easy to unlock.

Season 5brings a range of new Aftermarket Parts to multiplayer and battle royale alike, with the JAK Widemouth Barrel being the first of the update.

When equipped on the MORS, this unique conversion kit turns the sniper rifle into a futuristic Blunderbuss, a lethal close-range shotgun that last appeared in COD WWII. While its lack of range makes it a mediocre primary, this variant of the MORS makes for a fine secondary when used in close quarters.

It’s unlikely to dominate the meta anytime soon, but it is a lot of fun to use, especially in multiplayer, where it can kill in one shot. However, it’s not overly useful in Warzone, and other shotguns like theJAK WardensandHaymakerwill serve you better.

How to get the JAK Widemouth Barrel conversion kit

How to get the JAK Widemouth Barrel conversion kit

The JAK Widemouth Barrel is unlocked bycompleting any fiveweekly challengesfrom Season 5, Week 1. These challenges can be completed across multiplayer, Warzone, and Zombies, or even a combination of the three.

After you have finished five challenges and unlocked the JAK Gunslinger, the Aftermarket Part can be equipped on the MORS in the Conversion Kit attachment slot. To do this, you’ll first need to reach Level 19 on the futuristic sniper rifle.

Complete any five of the following challenges to unlock the JAK Widemouth Barrel:

For more useful Call of Duty guides, check out thebest Warzone loadoutsandMW3 loadouts. Also, these breakdowns on thebest snipers,assault rifles, andSMGsto use will make winning more Warzone matches nice and easy.

Kurt Perry is a Games Writer on Dexerto’s UK team, specializing in FPS and live service games. He is Games Journalism graduate, providing expert coverage of Call of Duty (Warzone, Black Ops, Modern Warfare), Destiny, and Pokemon Go. He also has bylines at PC Invasion. You can contact him at: kurt.perry@dexerto.com