Star Wars: A Flicker of Hope
Miniaturized Universal Upgrade
Equipment with the miniaturized upgrade wights half as much, and is one size smaller (see “Equipment Sizes” on page 38). A melee weapon that is miniaturized has its damage dice reduced by one step (d6s become d4s, d4s become d3s, and so on) because it lacks the mass and striking surface area to deal more damage.
Source: Scum and Villainy, p. 41.