101Leafy researched the games.
Wyvern Bone Gunlance

Introductory Gunlance to polish one's skills. Strong, easy to use. Shelling Lv3
| Class | Gunlance |
|---|---|
| Rarity | 2 |
| Attack | 299 |
| Slots | 0 |
| Price | 2,150z |
Upgrades
| Upgraded from | Great Bone Gunlance |
|---|---|
| Upgrades into | Hellsting |
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 756.