Call of Duty Modern Warfare 3 (MW3) Walkthrough & Guides Wiki

Call of Duty Modern Warfare 3 (MW3)

How to Unlock ST Pyro Heavy Barrel Attachment

★ S6 New Guns: DTIR 30-06 | Kastov LSW
☆ S5 Reloaded Dark Aether Keys and Locations
★ Mr. Peeks | Drum | Locked Diary | Giraffe Toy
☆ Final MWZ Story Mission: Ascension Walkthrough
★ Zombies Map | Dark Aether Interactive Map
☆ Rarity vs Pack-a-Punch Damage Chart

The ST Pyro Heavy Barrel is a gun attachment found under the Barrels attachment category of Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the ST Pyro Heavy Barrel and find out all compatible guns for this attachment!

List of Contents

How to Unlock ST Pyro Heavy Barrel

Level Up Guns in MW3 Multiplayer Modes

The ST Pyro Heavy Barrel attachment can be unlocked by leveling up the following guns in MW3 multiplayer, Zombies, or Warzone:

Modern Warfare 3 - Rocket icon Attention! This section is under construction! Check back soon as we update this page with MW3 unlock info for this attachment.

Complete the Attachment's Armory Unlock Challenge

Modern Warfare 3 - Armory Unlock Challenge for Attachments

Alternatively, players who have reached Account Level 25 can opt to complete Armory Unlock challenges to get the ST Pyro Heavy Barrel attachment, early.

Once you unlock this feature, modify your chosen gun at the Gunsmith and select the ST Pyro Heavy Barrel from the Barrel attachment slot of your weapon. This should activate its Armory Unlock contract, allowing you to complete Daily and Bonus Challenges to get it earlier.

Armory Unlock Challenges

ST Pyro Heavy Barrel Compatible Guns

Guns That Can Use the Attachment
Modern Warfare 3 -Pulemyot 762Pulemyot 762

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

Best Barrels to Equip in MW3

Best MW3 Barrels
This list is under construction!

Comment

Post (0 Comments)

Author

Call of Duty Modern Warfare 3 (MW3) Walkthrough Team
This article was created by Game8's elite team of writers and gamers.

    Walkthrough Menu

    Please participate in our
    site improvement survey 11/2024
    Would you assist in
    improving Game8's site?
    ×
    This survey will take about 1 minute.
    Your answers will help us to improve our website.
    We are listening to our users' valuable opinions and discussing how to act on them.
    The information collected through this survey will be used for the purpose of improving our services. In addition, the information will only be disclosed a part of a statistic in a format that will not allow identification of personal information.
    Begin Survey
    Not Now
    ×
    Please rate each item regarding Game8.co's Advertisements.
    Amount of Ads
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Placement of Ads
    Timing of Ad Display
    Ad Loading Speed
    Safeness of Ads
    Content of Ads
    ×
    Please rate each item regarding Game8.co's Quality of Articles.
    Amount of information
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Frequency of updates
    Speed of new information
    Accuracy of articles
    Understandibility of articles
    Readability of sentences
    ×
    Please rate each item regarding Game8.co's Usability of the Site.
    Ease of finding information
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Loading Speed
    Use of Color
    Font Size
    Visibility of Images
    Easy to Understand Layout
    ×
    Please rate each item regarding Game8.co's Message Boards, Comments.
    Ease of Writing
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Readability
    Ease in Finding Information
    Comment Quality
    Comment Quantity
    Admin Response
    ×
    Please rate each item regarding Game8.co's Site's new design.
    Please rate our site's new design
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Do you think that the website's design change makes the site easier to use?
    Has the new design made it easier for you to find information on the site?
    Has the new design improved the overall visual appeal of the site?
    How would you rate your overall satisfaction with the new design of the site?
    ×
    How likely are you to recommend Game8 to someone you know?
    Very Unlikely
    0
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    Very Likely
    If you have other opinions regarding potential improvement to the website, please share them with us. We would appreciate your honest opinion.
    Note: This is a free response section, so you can proceed without entering anything.
    Note: Please be sure not to enter any kind of personal information into your response.
    ×
    Thank You
    ×
    Thank you for participating in our survey! Your answers will help us to improve the quality of our website and services.
    We hope you continue to make use of Game8.
    Close
    For other opinions or comments, go here.

    Current Season Guides and News

    Zombies Guides

    Zombies Season 5 Content

    Zombies Season 4 Content

    Zombies Season 3 Content

    Zombies Season 2 Content

    Zombies Season 1 Content

    Recommended Zombies Guides

    Zombies Guns and Weapon Guides

    Zombies Map Guides

    Zombies Enemy Guides

    Camos

    Campaign

    Campaign Walkthroughs

    Campaign Guides

    Tips and Tricks

    Challenges

    Leveling Guides

    Settings Guides

    FAQs and Other Guides

    Multiplayer Modes

    Achievements

    Guns and Weapons

    Attachments

    Equipment

    Perks

    Operators

    Store Bundles

    Battle Pass

    Calling Cards

    Blueprints

    Emblems

    Charms

    Loading Screens

    Stickers and Large Decals

    Characters

    Seasons

    Bugs and Errors

    News and Updates

    Latest News

    Promotions

    Updates and Patch Notes

    COD Next Oct 2023 News

    Past Events

    Pre-Release News

    Other Call of Duty Wikis

    Rankings

    Popular Articles
    Message Board

    Gaming News

    Dragon Age Veilguard Review | Finally Embraced the Action

    Dragon Age Veilguard Review

    Popular Games

    Recommended Games

    All rights reserved

    © 2023 Activision Publishing, Inc. ACTIVISION, CALL OF DUTY, MODERN WARFARE, and CALL OF DUTY WARZONE are trademarks of Activision Publishing, Inc. All other trademarks and trade names are the property of their respective owners.

    The copyrights of videos of games used in our content and other intellectual property rights belong to the provider of the game.
    The contents we provide on this site were created personally by members of the Game8 editorial department.
    We refuse the right to reuse or repost content taken without our permission such as data or images to other sites.