Sleight of Hand is a trait in Destiny 2 that can appear on 16 weapons. An enhanced version exists on crafted and some newer weapons.
What Sleight of Hand does
Final blows with weapons or abilities while this weapon is stowed increase its handling, stability, and reload speed for a short duration.
Enhanced version
Final blows with weapons or abilities while this weapon is stowed increase its handling, stability, and reload speed for an improved duration.