Underbarrel attachments in MW4
Modern Warfare 4 lists 20 community-reported underbarrel attachments. 10 of them have their own page below. Activision's weapon sheets give 24 weapons a underbarrel slot. CODMunity lists stat changes for 10 of them. Improves recoil control and aiming stability; some weapons can mount specialised launchers here.
Community-reportedNames, weapons and stat changes from community sites, read November 4, 2026: community-reported and unverified.
Strongest reported effects of underbarrel attachments
These come from CODMunity's game data (read November 4, 2026). Each line names the attachment and weapon with the largest reported change to one stat, as a percentage of that weapon's own value, so two weapons with different base values are compared by percent only. Lines marked better move the stat in the direction that helps the player; lines marked worse show the largest cost.
Largest reported improvements
- Largest reported movement speed increase (better): MIRE-50 Tac Grip (Vertical Grip) on the Patriot XMR (Assault Rifle), +5%.
- Largest reported ADS movement speed increase (better): Hurricane Grip on the M4 (Assault Rifle), +7%.
- Largest reported vertical recoil decrease (better): FSS Fireline Grip (Angled grip) on the Han 86 (Assault Rifle), −9%.
- Largest reported horizontal recoil decrease (better): FSS Beargrip (Bipod Grip) on the Patriot XMR (Assault Rifle), −10%.
- Largest reported strafe speed increase (better): MIRE-50 Tac Grip (Vertical Grip) on the Signal 50 (Sniper Rifle), +6%.
- Largest reported firing movement speed increase (better): MIRE-50 Tac Grip (Vertical Grip) on the Signal 50 (Sniper Rifle), +6%.
- Largest reported ADS out speed decrease (better): MIRE-50 Tac Grip (Vertical Grip) on the Rezi 12 (Shotgun), −4%.
- Largest reported vertical gun kick decrease (better): FSS Fireline Grip (Angled grip) on the Han 86 (Assault Rifle), −9%.
- Largest reported horizontal gun kick decrease (better): Hurricane Grip on the M4 (Assault Rifle), −10%.
- Largest reported ADS idle sway decrease (better): Bruen Renegade Grip (Angled Grip) on the FiNN LMG (LMG), −50%.
- Largest reported ADS gun bob decrease (better): Bruen Renegade Grip (Angled Grip) on the FiNN LMG (LMG), −50%.
- Largest reported hip idle sway decrease (better): FTAC Combat Grip (Vertical Grip) on the FiNN LMG (LMG), −50%.
- Largest reported hip gun bob decrease (better): FTAC Combat Grip (Vertical Grip) on the FiNN LMG (LMG), −40%.
Largest reported drawbacks
- Largest reported ADS speed increase (worse): V46 Vert-Tac (Vertical Grip) on the VEL 46 (SMG), +10%.
- Largest reported sprint to fire speed increase (worse): FSS Fireline Grip (Angled grip) on the ISO Nightshade (SMG), +14%.
- Largest reported ADS out speed increase (worse): V46 Vert-Tac (Vertical Grip) on the VEL 46 (SMG), +9%.
Underbarrel attachments with a page
The table is sorted by the number of weapons the source lists a stat change for, most first, then by name from A to Z.
| Attachment | Weapons listed | Weapons with a stat change | Largest reported change |
|---|---|---|---|
| GW Domi-9 | 20 | 20 | Hip idle sway −50% on the Han 86 (better) |
| FSS TAC90 Grip | 19 | 19 | ADS idle sway −50% on the Han 86 (better) |
| MIRE-50 Tac Grip | 19 | 19 | ADS speed +9% on the .50 GS (worse) |
| FSS Fireline Grip | 19 | 18 | Sprint to fire speed +14% on the ISO Nightshade (worse) |
| FSS Beargrip | 11 | 11 | Horizontal recoil −10% on the Patriot XMR (better) |
| Bruen Renegade Grip | 3 | 3 | ADS idle sway −50% on the FiNN LMG (better) |
| FTAC Combat Grip | 2 | 2 | Hip idle sway −50% on the FiNN LMG (better) |
| Hurricane Grip | 1 | 1 | Horizontal recoil −10% on the M4 (better) |
| V46 Vert-Tac | 1 | 1 | ADS speed +10% on the VEL 46 (worse) |
| XRK Co-Ride 56 | 1 | 1 | Hip idle sway −50% on the Type 73 (better) |
Weapons with a underbarrel slot
Activision's launch weapon sheets give 24 weapons a underbarrel slot. Axion Clearcut, Cronen Maelstrom, WZ.55 Striga Rampage, PPSh-41 Ember, and Oris 8.6 Razor block this slot while equipped.
Reported without a page of their own
10 underbarrel attachments in the list has no reported stat change and is in no popular build, so it has no page. The name and weapons are all the sources give.
Frequently asked questions
What does a underbarrel attachment do in MW4?
Improves recoil control and aiming stability; some weapons can mount specialised launchers here. The effects below come from community data and are unverified.
How many underbarrel attachments are there?
Community sites report 20 underbarrel attachments in MW4. Activision has not published its list, so the real number is unknown. 10 of them have a page on this site.
Which underbarrel attachment has the largest reported movement speed change?
MIRE-50 Tac Grip on the Patriot XMR, at +5% (better), according to CODMunity's game data. That is community-reported and unverified.
Which weapons have a underbarrel slot?
Han 86, M4, Hyeon Burst, Patriot XMR, Kastov 762, Oden, Axion, Cronen Squall, ISO Nightshade, VEL 46, Wz.55 Striga, PPSh-41, X-58 Nyx, Rezi 12, Warlord, FiNN LMG, Type 73, APOC-338, MAR-9, Oris 8.6, Mosin-Nagant, KG-7 Vulcan, Signal 50, and .50 GS.