101Leafy researched the games.
Basarios Rock

Made of Basarios materials. Its prototype vibrating handle emits a sound.
| Class | Hunting Horn |
|---|---|
| Rarity | 4 |
| Attack | 676 |
| Fire | 250 |
| Slots | 0 |
| Price | 3,825z |
Upgrades
| Upgraded from | Spiked Hammer+ |
|---|---|
| Upgrades into | Basarios Rock Mk.II |
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 734.
Materials
Basarios Shell ×8, Machalite Ore ×25, FireWyvern Fluid ×10, Hercudrome ×3