Weapons/Heavy Bowgun/Gravios Howl IHeavy BowgunGravios Howl IRarity 6Heavy Bowgun · Gravios Tree treeRaw210Element—Affinity-15%Slots2 / 1Defense+30CraftingUpgraded from Queen's Longfire I.UpgradeGravios Skull×3Gravios Pleura+×4Gravios Wing×5Gravios Certificate S×2