BO4topright Ztr

"Advanced auto-burst mechanism allows for each successive burst to fire with a shorter delay as the trigger is held down."
Create-A-Class description.
Repeater Operator Mod Icon BO4
Unlocked Weapon level 13

The Repeater is an Operator Mod featured in Call of Duty: Black Ops 4. It is only available for the ABR 223 and decreases the delay between bursts as long as the firing button is held.