101Leafy researched the games.
Black Gunlance

Made from Black Gravios materials. One hit can rain down hell. Shelling Lv2
| Class | Gunlance |
|---|---|
| Rarity | 6 |
| Attack | 483 |
| Affinity | -5% |
| Defense | +8 |
| Slots | 1 |
| Price | 60,000z |
Upgrades
| Upgraded from | White Cannon |
|---|---|
| Upgrades into | Black Gore Cannon |
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 758.