Mosin K025 Barrel attachment in MW4
The Mosin K025 Barrel is a barrel attachment (“Long Barrel”) that community sites list for one weapon: Mosin-Nagant. CODMunity lists a stat change on 1 of them; the largest is damage range +25% on the Mosin-Nagant (better). It is in 1 popular build that CODMunity lists.
Community-reportedDMZ Radar, ggranked, and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the Mosin K025 Barrel
Activision publishes no compatibility list; 3 community sources report this weapon. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| Mosin-Nagant | Marksman Rifle | damage range (large, better), bullet velocity (large, better), ADS speed (moderate, worse), ADS out speed (moderate, worse), ADS idle sway (moderate, worse), hip idle sway (moderate, worse), sprint to fire speed (small, worse), and ADS movement speed (small, worse), and 10 more |
What the Mosin K025 Barrel changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Mosin-Nagant | Damage range | 100% | 125% | +25% (better) |
| Bullet velocity | 700 m/s | 840 m/s | +20% (better) | |
| ADS speed | 350 ms | 378 ms | +8% (worse) | |
| Sprint to fire speed | 240 ms | 254 ms | +6% (worse) | |
| ADS movement speed | 2.10 m/s | 2.02 m/s | −4% (worse) | |
| Vertical recoil | 78.8 | 75.6 | −4% (better) | |
| Horizontal recoil | 45.5 | 43.7 | −4% (better) | |
| Movement speed | 4.57 m/s | 4.43 m/s | −3% (worse) | |
| Sprint speed | 6.04 m/s | 5.98 m/s | −1% (worse) |
Smaller changes are left out of the table: 9 other stats on the Mosin-Nagant.
How it ranks among barrel attachments
Its largest change on each weapon, compared with the other barrel attachments the source lists that stat for.
- Mosin-Nagant: its large damage range change (better) is the best of 2 barrel attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the Mosin K025 Barrel
CODMunity lists 1 popular build that use it, all for DMZ. The styles are Long Range. The same builds also use optic, muzzle, magazine, and stock attachments.
| Weapon | Mode and style | Tier | Other attachments | Builder |
|---|---|---|---|---|
| Mosin-Nagant | DMZ, Long Range | Not tiered | Optic: GL K230, Muzzle: FTAC Silent Recon, Magazine: 10 Round Mag, and Stock: Lockwood Eagle Stock | Open in the builder: Mosin-Nagant, Long Range |
Builds are community-reported and unverified.
Frequently asked questions
What does the Mosin K025 Barrel do in MW4?
CODMunity lists 18 stat changes for it across 1 weapon: 6 better and 12 worse. The largest is damage range +25% on the Mosin-Nagant (better).
Which weapons can use the Mosin K025 Barrel?
Community sites list Mosin-Nagant. Activision has not published a compatibility list.
Is the Mosin K025 Barrel in a popular build?
Yes. CODMunity lists it in 1 popular build, on Mosin-Nagant.