Call of Duty: Modern Warfare 3has released a third set of weekly challenges for its first season, granting a powerful conversion kit for the Tyr revolver for those who complete some of this week’s challenges. The good news is that this week’s challenges are fairly easy, requiring you to land Rival-9 kills across various playlists.

If you’re comfortable using SMGs, you should have no issue unlocking the Tyr’s unique Aftermarket Part. This guide will showcase how to complete every weekly challenge added this week, and we’ll give a brief overview of how the Tyr’s new rifle conversion kit works.

Modern Warfare 3 Tyr Conversion Kit Preview

Updated June 01, 2025, by Charles Burgar:Now that the Tyr’s conversion kit can be used, we’ve done some testing to figure out how it works and how to best utilize it. We’ve updated this guide to briefly explain how the Tyr’s rifle conversion kit works, what stats it modifies, and how you can best use it in your Tyr builds.

Week 3 Challenge Reward

The reward this week is theJAK Beholder Rifle Kit for the Tyr.This conversion kit gives the Tyr a 3D-printed barrel and stock, greatly reducing its recoil while improving its range. Its effective damage falloff is increased to 19m, and its bullet velocity is doubled.

Despite the existence of a stock, it’s possible to install grips onto the Tyr with the Beholder RIfle Kit. This is most likely a bug.

Modern Warfare 3 HRM-9 SMG

Barrel attachments may not be installed on the Tyr while this conversion kit is equipped, but the greatly improved range stats make it a prime candidate for high magnification scopes and certain underbarrel attachments. It isn’t quite as powerful as a sniper rifle, but this conversion kit makes the Tyr a great hybrid between a pistol and marksman rifle.

2,500 XP

Get 25 kills while aiming down sights (ADS) with a recommended SMG.

Modern Warfare 3 Zombies Collage

5,000 XP

Get 15 kills with a recommended weapon after having recently swapped weapons.

MW3 Warzone Ghost Fighting On Rooftop

7,500 XP

10,000 XP

Complete 10 Contracts

Get 300 kills while aiming down sights (ADS) with a recommended SMG.