How do I empower my Uzi?

The best way to further increase your Uzi's performance (or any weapon) is to do the following:

1. Make gun attachments from your camp's weapon store and attach them to your weapon

2. Upgrade your gun attachments using mechanical materials.

3. Upgrade your gun using upgrade formula

4. Energize it to give it a temporary buff that will last for hours.

Also, try to get the camo version of weapons. Collector's Edition of weapons have permanent buffs that make them better than their default versions.