The latest expansion for Destiny 2 brings a host of new mechanics and gameplay systems. The Witch Queen has a cinematic campaign, a new destination, and a new weapon crafting system.
The Enclave is where the crafting system takes place. It is located on Mars and will be your home away from home as you craft and refine your new weapon. The weapon crafting system has many unique elements, the main of which is the level of the weapon.
Each crafted weapon has several components. An intrinsic trait, a vision and many perks. Newly crafted guns have some perks that are locked when they are first created. The only way to unlock perks is through leveling up weapons.
Weapons level up just by equipping them. Killing weapons and completing activities both contribute to the weapon’s overall level. The degree of abrasion is not an endless proposition. Each crafting weapon, including foreign objects, has 20 levels to achieve.
Once a weapon reaches Level 20, all enhanced perks and traits are available to use on that weapon. Craft a weapon, use it while playing and reach Level 20 to complete the entire weapon crafting journey.
https://www.gamepur.com/guides/what-is-the-maximum-weapon-level-in-destiny-2-the-witch-queen What is the maximum weapon level in Destiny 2: The Witch Queen