20 Round Mag attachment in MW4
The 20 Round Mag is a magazine attachment (“20-round magazine”) that community sites list for 3 weapons: Axion, Oris 8.6, and Krait P68. CODMunity lists a stat change on 3 of them; the largest is magazine size +100% on the Oris 8.6 (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 20 Round Mag
Activision publishes no compatibility list; 3 community sources report these 3 weapons. No weapon level is reported.
| Weapon | Class | Weapon level | Stats with a listed change |
|---|---|---|---|
| Axion | Assault Rifle | reload time (large, better), magazine size (large, worse), sprint to fire speed (moderate, better), ADS movement speed (small, better), ADS out speed (small, better), ADS speed (small, better), movement speed (minor, better), and sprint speed (minor, better), and 3 more | |
| Oris 8.6 | Marksman Rifle | total rounds (large, better), magazine size (large, better), reload time (large, worse), ADS speed (small, worse), ADS out speed (small, worse), ADS movement speed (minor, worse), crouch movement speed (minor, worse), and firing movement speed (minor, worse), and 5 more | |
| Krait P68 | Pistol | magazine size (large, better), total rounds (large, better), reload time (moderate, worse), ADS speed (moderate, worse), ADS out speed (moderate, worse), crouch movement speed (small, worse), ADS movement speed (small, worse), and firing movement speed (small, worse), and 5 more |
What the 20 Round Mag changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Axion | Reload time | 3333 ms | 1966 ms | −41% (better) |
| Magazine size | 30 rounds | 20 rounds | −33% (worse) | |
| Sprint to fire speed | 210 ms | 189 ms | −10% (better) | |
| ADS movement speed | 2.41 m/s | 2.55 m/s | +6% (better) | |
| ADS speed | 260 ms | 247 ms | −5% (better) | |
| Movement speed | 4.62 m/s | 4.67 m/s | +1% (better) | |
| Sprint speed | 6.11 m/s | 6.17 m/s | +1% (better) | |
| Oris 8.6 | Magazine size | 10 rounds | 20 rounds | +100% (better) |
| Reload time | 3000 ms | 3630 ms | +21% (worse) | |
| ADS speed | 260 ms | 268 ms | +3% (worse) | |
| ADS movement speed | 2.78 m/s | 2.72 m/s | −2% (worse) | |
| Movement speed | 4.77 m/s | 4.72 m/s | −1% (worse) | |
| Sprint speed | 6.18 m/s | 6.12 m/s | −1% (worse) | |
| Krait P68 | Magazine size | 10 rounds | 20 rounds | +100% (better) |
| Reload time | 2967 ms | 3353 ms | +13% (worse) | |
| ADS speed | 180 ms | 194 ms | +8% (worse) | |
| ADS movement speed | 3.68 m/s | 3.57 m/s | −3% (worse) | |
| Movement speed | 4.99 m/s | 4.89 m/s | −2% (worse) | |
| Sprint speed | 6.58 m/s | 6.45 m/s | −2% (worse) |
Smaller changes are left out of the table: 4 other stats on the Axion, 7 other stats on the Oris 8.6, and 7 other stats on the Krait P68.
Changes across weapons
The stats it changes on 3 weapons, with the lowest and highest change.
| Stat | Weapons | Lowest change | Highest change | Verdicts |
|---|---|---|---|---|
| Magazine size | 3 | −33% | +100% | 2 better, 1 worse |
| Reload time | 3 | −41% | +21% | 1 better, 2 worse |
| ADS speed | 3 | −5% | +8% | 1 better, 2 worse |
| ADS movement speed | 3 | −3% | +6% | 1 better, 2 worse |
| Movement speed | 3 | −2% | +1% | 1 better, 2 worse |
| Sprint speed | 3 | −2% | +1% | 1 better, 2 worse |
| Sprint to fire speed | 1 | −10% | −10% | 1 better, 0 worse |
| ADS out speed | 3 | −6% | +8% | 1 better, 2 worse |
| Crouch movement speed | 3 | −4% | +1% | 1 better, 2 worse |
| Firing movement speed | 3 | −3% | +1% | 1 better, 2 worse |
| Strafe speed | 3 | −2% | +1% | 1 better, 2 worse |
| Total rounds | 2 | +60% | +150% | 2 better, 0 worse |
| ADS gun bob | 2 | +2% | +3% | 0 better, 2 worse |
| Tactical sprint speed | 2 | −2% | −1% | 0 better, 2 worse |
How it ranks among magazine attachments
Its largest change on each weapon, compared with the other magazine attachments the source lists that stat for.
- Axion: its large reload time change (better) is the best of 3 magazine attachments.
- Oris 8.6: its large magazine size change (better) is the best of 2 magazine attachments.
- Krait P68: its large magazine size change (better) is the best of 2 magazine attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the 20 Round Mag
CODMunity lists 1 popular build that use it, all for DMZ. The styles are Long Range. The same builds also use optic, muzzle, barrel, and rear grip attachments.
| Weapon | Mode and style | Tier | Other attachments | Builder |
|---|---|---|---|---|
| Oris 8.6 | DMZ, Long Range with Apex Attachment | Not tiered | Optic: Cronen R808, Muzzle: EXP Undertow Gen. 2, Barrel: EXP Crosstac 22", and Rear Grip: Bruen R7-TC Grip | Open in the builder: Oris 8.6, Long Range |
Builds are community-reported and unverified.
Frequently asked questions
What does the 20 Round Mag do in MW4?
CODMunity lists 37 stat changes for it across 3 weapons: 14 better and 23 worse. The largest is magazine size +100% on the Oris 8.6 (better).
Which weapons can use the 20 Round Mag?
Community sites list Axion, Oris 8.6, and Krait P68. Activision has not published a compatibility list.
Is the 20 Round Mag in a popular build?
Yes. CODMunity lists it in 1 popular build, on Oris 8.6.