EXP Haste 80L 14" attachment in MW4
The EXP Haste 80L 14" is a barrel attachment (“Light Barrel”) that community sites list for one weapon: Patriot XMR. CODMunity lists a stat change on 1 of them; the largest is ADS movement speed +8% on the Patriot XMR (better). No popular build that CODMunity lists uses it.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the EXP Haste 80L 14"
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 |
|---|---|---|---|
| Patriot XMR | Assault Rifle | ADS movement speed (moderate, better), crouch movement speed (moderate, better), vertical gun kick (moderate, worse), ADS speed (small, better), ADS out speed (small, better), strafe speed (small, better), movement speed (small, better), and sprint speed (small, better), and 3 more |
What the EXP Haste 80L 14" changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Patriot XMR | ADS movement speed | 2.22 m/s | 2.40 m/s | +8% (better) |
| ADS speed | 280 ms | 263 ms | −6% (better) | |
| Movement speed | 4.54 m/s | 4.68 m/s | +3% (better) | |
| Sprint speed | 6.05 m/s | 6.23 m/s | +3% (better) | |
| Sprint to fire speed | 210 ms | 204 ms | −3% (better) |
Smaller changes are left out of the table: 6 other stats on the Patriot XMR.
How it ranks among barrel attachments
Its largest change on each weapon, compared with the other barrel attachments the source lists that stat for.
- Patriot XMR: its moderate ADS movement speed change (better) is the best of 4 barrel attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the EXP Haste 80L 14"
No popular build listed by CODMunity uses the EXP Haste 80L 14". That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the EXP Haste 80L 14" do in MW4?
CODMunity lists 11 stat changes for it across 1 weapon: 10 better and 1 worse. The largest is ADS movement speed +8% on the Patriot XMR (better).
Which weapons can use the EXP Haste 80L 14"?
Community sites list Patriot XMR. Activision has not published a compatibility list.
Is the EXP Haste 80L 14" in a popular build?
No. None of the popular builds that CODMunity lists uses it.