Researchable Meitou Weapon Grade
Allows for the ability to research the Meitou weapon grade, previously only crafted by the legendary smith Cross. It is not possible to purchase a meitou weapon in the base game and there are very few of these weapons throughout the world, one being owned by the Bugmaster.
Courtesy of Tovarisch_Vasin: When crafting Meitou weapons the critical chance to upgrade to the next grade becomes more like a critical failure, causing the weapon to be degraded to rusted junk. This would seem to add a new dynamic to the game but it unfortunately unable to be fixed in a mod.