Rat-A-Tats have moderate damage outputs, but are capable of inflicting comparatively high damage due to their often huge magazine sizes. Potentially lengthy reload speeds can offset these gains however.
Nisha can make powerful use of Rat-A-Tats due to Showdown granting pinpoint accuracy, improving their high fire rate, and potentially improving the reload speed when specced into Impatience.
Fusillade - Legendary assault rifle with increased damage, reload speed, fire rate, and accuracy.
The Rat-A-Tat is obtained randomly from any suitable loot source.