101Leafy researched the games.
Diablos Horn Bow I

Crafted from twisted horns. Mastery allows for fine adjustments in aiming.
| Class | Bow |
|---|---|
| Rarity | 6 |
| Attack | 216 |
| Affinity | 10% |
| Defense | +10 |
| Slots | 1 |
| Table price | 10,250z |
Upgrades
| Upgrades into | Diablos Horn Bow II |
|---|
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 800.
Materials
Diablos Carapace ×4, Majestic Horn ×2, Wyvern Stone ×2, Black Blos Spine ×3