101Leafy researched the games.
Luna's Howl

Made of Lunastra materials, its blue flame will shatter opponents. Shelling Lv1
| Class | Gunlance |
|---|---|
| Rarity | 5 |
| Attack | 345 |
| Fire | 350 |
| Slots | 0 |
| Shelling | Spread Type Level 1 |
| Table price | 5,600z |
Upgrades
| Upgraded from | Steel Gunlance |
|---|---|
| Upgrades into | Luna's Roar |
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
Lunastra Tail ×2, Lunastra Shell ×5, Lunastra Mane ×2, Dragonite Ore ×5