- "Heavy barrel with an extended tube improves shell capacity and vertical recoil control."
- — Gunsmith Description
The Heavy Barrel is an attachment in Call of Duty: Black Ops 6. It is a Barrel attachment, exclusive to the Marine SP Shotgun.
| Weapon | Unlock Level | Positive Stats | Negative Stats |
|---|---|---|---|
| Marine SP | Level 24 | - 28% Recoil Gun Kick (53.6 to 38.5 °/s) - 30% Vertical Recoil Control (98.04 to 68.63 °/s) + 33% Magazine Ammo Capacity (6 to 8 ammo capacity) |
- 27% Reload Quickness (5.58 to 7.08 seconds) - 24% Empty Reload Quickness (6.18 to 7.68 seconds) |