101Leafy researched the games.
Hunter's Power BowI

By using Basarios' rock-like materials, users are well equipped for self-defense.
| Class | Bow |
|---|---|
| Rarity | 4 |
| Attack | 192 |
| Defense | +10 |
| Slots | 0 |
| Table price | 4,400z |
Upgrades
| Upgraded from | Hunter's Bow IV |
|---|---|
| Upgrades into | Hunter's Power BowII |
Can also be made new at the smithy.
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 796.
Materials
Basarios Wing ×1, Dragonite Ore ×4, Lg Monster Bone ×4, Machalite Ore ×15