101Leafy researched the games.
Tigrex Great Sword

Replica of a great Tigrex fang. One swipe literally tears everything apart.
A great sword modeled on the great fangs of a Tigrex, with a shape that puts real fangs to use. In place of an edge it has several fangs, which can be driven into a monster to gouge it. Its swing is feared for tearing everything apart.
Our translation of 復刻 ハンター大全 (KADOKAWA / Enterbrain, 2014), page 145.
| Class | Great Sword |
|---|---|
| Rarity | 7 |
| Attack | 1056 |
| Affinity | -30% |
| Slots | 0 |
| Table price | 80,000z |
Upgrades
| Upgraded from | Tiger Agito |
|---|---|
| Upgrades into | Tigrex Supreme Sword |
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 686.