101Leafy researched the games.
Kut-Ku Stave G

Crafted with the latest methods, it looks the same, but causes G-Level damage.
A bow that hunters who have taken down many Yian Kut-Ku with the Hunter's Bow often make as their next step. The counterweight on its center, which recalls a Yian Kut-Ku's beak, is one of many touches that show the workshop craftsmen's playful side.
Our translation of 復刻 ハンター大全 (KADOKAWA / Enterbrain, 2014), page 175.
| Class | Bow |
|---|---|
| Rarity | 9 |
| Attack | 276 |
| Fire | 220 |
| Slots | 1 |
| Table price | 75,000z |
Materials
Commendation G ×1, Thick Kut-Ku Scl ×8, Hvy Kut-Ku Shell ×6, Top-GrdRedHorn ×3