Obstinate Talent 
 Warhammer 40k: Darktide 

Swapping to your Melee Weapon while you have 15 Melee Justice stacks or more, grants you +15% Melee Attack Speed until you run out of stacks, or swap to your Ranged Weapon.

Swapping to your Ranged Weapon while you have 15 Ranged Justice stacks or more, grants you +15% Fire Rate until you run out of stacks, or swap to your Melee Weapon.