101Leafy researched the games.
Violet Cannon

Gunlance that protects its user well while Shelling. Great Defense. Shelling Lv3
| Class | Gunlance |
|---|---|
| Rarity | 9 |
| Attack | 529 |
| Defense | +40 |
| Slots | 2 |
| Price | 85,000z |
Upgrades
| Upgraded from | Scissor Cannon |
|---|---|
| Upgrades into | Violet Buster |
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 758.
Materials
PlumD.HermitrClw ×4, PlumD.HermitrShl ×8, Giant Blk Pearl ×3, FireWyvrn BrnStm ×2