101Leafy researched the games.
Dragon Bow Mountain

Uses the core of a Lao-Shan horn. Drawing it is a matter of the soul, not power.
| Class | Bow |
|---|---|
| Rarity | 8 |
| Attack | 288 |
| Dragon | 180 |
| Slots | 0 |
| Price | 47,500z |
Upgrades
| Upgraded from | Dragon Bow Earth |
|---|---|
| Upgrades into | Dragon Bow Chaos |
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 802.