XRK Relay 7 attachment in MW4
The XRK Relay 7 is a stock attachment (“Light Stock”) that community sites list for one weapon: Axion. CODMunity lists a stat change on 1 of them; the largest is ADS movement speed +13% on the Axion (better). It is in 1 popular build that CODMunity lists.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the XRK Relay 7
Activision publishes no compatibility list; 2 community sources report this weapon. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| Axion | Assault Rifle | ADS gun bob (large, worse), ADS idle sway (large, worse), ADS movement speed (moderate, better), crouch movement speed (small, better), movement speed (small, better), strafe speed (small, better), firing movement speed (small, better), and flinch received (small, worse), and 2 more |
What the XRK Relay 7 changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Axion | ADS movement speed | 2.41 m/s | 2.72 m/s | +13% (better) |
| Movement speed | 4.62 m/s | 4.80 m/s | +4% (better) | |
| Sprint speed | 6.11 m/s | 6.23 m/s | +2% (better) |
Smaller changes are left out of the table: 7 other stats on the Axion.
How it ranks among stock attachments
Its largest change on each weapon, compared with the other stock attachments the source lists that stat for.
- Axion: its moderate ADS movement speed change (better) is the best of 2 stock attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the XRK Relay 7
CODMunity lists 1 popular build that use it, all for Multiplayer. The styles are Mobility. The same builds also use optic, muzzle, magazine, and laser attachments.
| Weapon | Mode and style | Tier | Other attachments | Builder |
|---|---|---|---|---|
| Axion | Multiplayer, Mobility | Very good | Optic: ZLR Type C, Muzzle: FSS IS40, Magazine: 40 Round Mag, and Laser: Schlager VISIV-5 | Open in the builder: Axion, Mobility |
Builds are community-reported and unverified.
Frequently asked questions
What does the XRK Relay 7 do in MW4?
CODMunity lists 10 stat changes for it across 1 weapon: 7 better and 3 worse. The largest is ADS movement speed +13% on the Axion (better).
Which weapons can use the XRK Relay 7?
Community sites list Axion. Activision has not published a compatibility list.
Is the XRK Relay 7 in a popular build?
Yes. CODMunity lists it in 1 popular build, on Axion.