EXP Firelite 12 attachment in MW4
The EXP Firelite 12 is a muzzle attachment (“Heavy Silencer”) that community sites list for one weapon: Rezi 12. CODMunity lists a stat change on 1 of them; the largest is bullet velocity +16% on the Rezi 12 (better). It is in 2 popular builds that CODMunity lists.
Community-reportedggranked and CODMunity, read . Unverified, not Activision data.
Weapons that can equip the EXP Firelite 12
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 |
|---|---|---|---|
| Rezi 12 | Shotgun | bullet velocity (large, better), ADS idle sway (large, worse), ADS gun bob (large, worse), ADS speed (moderate, worse), ADS out speed (moderate, worse), vertical recoil (small, better), horizontal recoil (small, better), and vertical gun kick (small, better), and 6 more |
What the EXP Firelite 12 changes
Percent changes are relative to the base value with nothing attached (CODMunity, read November 4, 2026).
| Weapon | Stat | Base | With it | Change |
|---|---|---|---|---|
| Rezi 12 | Bullet velocity | 340 m/s | 394 m/s | +16% (better) |
| ADS speed | 340 ms | 371 ms | +9% (worse) | |
| Vertical recoil | 98.5 | 92.6 | −6% (better) | |
| Horizontal recoil | 17.4 | 16.4 | −6% (better) | |
| Movement speed | 4.72 m/s | 4.63 m/s | −2% (worse) | |
| ADS movement speed | 3.09 m/s | 3.03 m/s | −2% (worse) |
Smaller changes are left out of the table: 8 other stats on the Rezi 12.
How it ranks among muzzle attachments
Its largest change on each weapon, compared with the other muzzle attachments the source lists that stat for.
- Rezi 12: its large bullet velocity change (better) is the only one listed.
Pros and cons the sources list
None reported, which is different from having none.
Popular builds that use the EXP Firelite 12
CODMunity lists 2 popular builds that use it, all for DMZ. The styles are Close Range. The same builds also use bolt, guard, barrel, stock, and underbarrel attachments.
| Weapon | Mode and style | Tier | Other attachments | Builder |
|---|---|---|---|---|
| Rezi 12 | DMZ, Close Range with Apex Attachment | Not tiered | Bolt: XRK Quad-80, Guard: Demo Service-12G, Barrel: ZLR Rogue 90 25", and Stock: No Stock | Open in the builder: Rezi 12, Close Range |
| Rezi 12 | DMZ, Close Range | Not tiered | Bolt: XRK Quad-80, Barrel: Haebang 635R-7, Underbarrel: FSS Fireline Grip, and Stock: No Stock | Open in the builder: Rezi 12, Close Range |
Builds are community-reported and unverified.
Frequently asked questions
What does the EXP Firelite 12 do in MW4?
CODMunity lists 14 stat changes for it across 1 weapon: 5 better and 9 worse. The largest is bullet velocity +16% on the Rezi 12 (better).
Which weapons can use the EXP Firelite 12?
Community sites list Rezi 12. Activision has not published a compatibility list.
Is the EXP Firelite 12 in a popular build?
Yes. CODMunity lists it in 2 popular builds, on Rezi 12.