GI-80 MilSpec Stock attachment in MW4
The GI-80 MilSpec Stock is a stock attachment (“Assault Stock”) that community sites list for one weapon: ISO Nightshade. CODMunity lists a stat change on 1 of them; the largest is ADS speed +8% on the ISO Nightshade (worse). No popular build that CODMunity lists uses it.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the GI-80 MilSpec Stock
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 |
|---|---|---|---|
| ISO Nightshade | SMG | ADS speed (moderate, worse), ADS out speed (small, worse), vertical recoil (small, better), horizontal recoil (small, better), vertical gun kick (small, better), and horizontal gun kick (small, better) |
What the GI-80 MilSpec Stock changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| ISO Nightshade | ADS speed | 240 ms | 259 ms | +8% (worse) |
| Vertical recoil | 40.9 | 38.0 | −7% (better) | |
| Horizontal recoil | 13.3 | 12.4 | −7% (better) |
Smaller changes are left out of the table: 3 other stats on the ISO Nightshade.
How it ranks among stock attachments
Its largest change on each weapon, compared with the other stock attachments the source lists that stat for.
- ISO Nightshade: its moderate ADS speed change (worse) is the weakest of 3 stock attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the GI-80 MilSpec Stock
No popular build listed by CODMunity uses the GI-80 MilSpec Stock. That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the GI-80 MilSpec Stock do in MW4?
CODMunity lists 6 stat changes for it across 1 weapon: 4 better and 2 worse. The largest is ADS speed +8% on the ISO Nightshade (worse).
Which weapons can use the GI-80 MilSpec Stock?
Community sites list ISO Nightshade. Activision has not published a compatibility list.
Is the GI-80 MilSpec Stock in a popular build?
No. None of the popular builds that CODMunity lists uses it.