The required materials for Reinforcement are Drearisite, Specklite, Argecite, and Oricalcite, which you’ll find from Festival Shares at the Smelting Foundry (or via Nata), or by dismantling your unwanted Artian Weapons.

Here's how to craft Artian Weapons in Monster Hunter Wilds, plus how to collect Artian materials and reinforce Artian Weapons.

Monster Hunter Wilds players share their biggest issue with the powerful Artian weapons in Capcom's popular action role-playing game.