FJX Kastov Grip attachment in MW4
The FJX Kastov Grip is a rear grip attachment (“Assault Grip”) that community sites list for one weapon: Kastov 762. CODMunity lists a stat change on 1 of them; the largest is vertical recoil −6% on the Kastov 762 (better). No popular build that CODMunity lists uses it.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the FJX Kastov Grip
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 |
|---|---|---|---|
| Kastov 762 | Assault Rifle | vertical recoil (small, better), horizontal recoil (small, better), vertical gun kick (small, better), horizontal gun kick (small, better), ADS speed (small, worse), ADS out speed (small, worse), and sprint to fire speed (small, worse) |
What the FJX Kastov Grip changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Kastov 762 | Vertical recoil | 51.9 | 48.8 | −6% (better) |
| Horizontal recoil | 28.7 | 27.0 | −6% (better) | |
| ADS speed | 280 ms | 291 ms | +4% (worse) | |
| Sprint to fire speed | 210 ms | 218 ms | +4% (worse) |
Smaller changes are left out of the table: 3 other stats on the Kastov 762.
How it ranks among rear grip attachments
Its largest change on each weapon, compared with the other rear grip attachments the source lists that stat for.
- Kastov 762: its small vertical recoil change (better) is the best of 2 rear grip attachments.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the FJX Kastov Grip
No popular build listed by CODMunity uses the FJX Kastov Grip. That says nothing about how it performs; most listed attachments are in no popular build.
Frequently asked questions
What does the FJX Kastov Grip do in MW4?
CODMunity lists 7 stat changes for it across 1 weapon: 4 better and 3 worse. The largest is vertical recoil −6% on the Kastov 762 (better).
Which weapons can use the FJX Kastov Grip?
Community sites list Kastov 762. Activision has not published a compatibility list.
Is the FJX Kastov Grip in a popular build?
No. None of the popular builds that CODMunity lists uses it.