A workshop upgrade that increases the duration of firing projectiles at 4x speed when Rapid Fire is activated.
| ‣ | Type | Common | Rare | Epic | Legendary | Mythic | Ancestral |
|---|---|---|---|---|---|---|---|
| Rapid Fire Duration substat | ‣ | n/a | 0.4s | 0.8s | 1.4s | 2.5s | 3.5s |
https://the-tower-idle-tower-defense.fandom.com/wiki/Rapid_Fire#Rapid_Fire_Duration