A weapon part can be upgraded with Blutes from the tech tree as long as it is at the maximum experience level. To have a part gain experience, mount it on a weapon, and gain points by using that weapon (kills and assists; or heal and buffs). When at maximum experience, the "Upgrade" button will appear, and the part will show the number of Blutes that is required to upgrade it. The default weapon tier is 1, no matter which part is equipped. It increases by one for each upgrade in the parts the weapon has equipped. Consider upgrading the payload of the type of weapon you use the most because it will have the best upgrade rate and can also be applied on a lot more weapons when compared to a regular part.
Complete the following tasks to unlock PlayStation 4 trophy rewards.