101Leafy researched the games.
Iron Gunlance

A low-cost Gunlance with more than adequate ability. A good start. Shelling Lv1
| Class | Gunlance |
|---|---|
| Rarity | 1 |
| Attack | 207 |
| Slots | 0 |
| Price | 1,100z |
Upgrades
| Upgraded from | Iron Lance |
|---|---|
| Upgrades into | Iron Gunlance+ |
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 756.
Materials
Machalite Ore ×5, Iron Ore ×10, Gunpowder ×5, Flame Sac ×1
Hard Ticket ×1, Iron Ore ×1