101Leafy researched the games.
TrueBlkDrgnGunlance

Said to be cursed and used for evil. A frightening sight. Shelling Lv4
| Class | Gunlance |
|---|---|
| Rarity | 10 |
| Attack | 621 |
| Dragon | 380 |
| Affinity | -20% |
| Slots | 0 |
| Price | 150,000z |
Upgrades
| Upgraded from | BlackDragonGunlance |
|---|
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 760.