The Renetti is a pistol available in Call of Duty: Modern Warfare 3 (2023).
In Modern Warfare 3, you will have access to a bunch of different attachments that can help the Renetti adapt to your preferred playstyle. This is done through the Modern Warfare 3 gunsmith. Here's a set of five that dominates close-quarters combat:
The damage improvements come from the MK2 Renetti Long Barrel and the 9mm High Grain Rounds which minimise any kind of damage drop-off throughout a match.
Next is the 24 Round Mag allowing you to eliminate multiple opponents without the need to reload regularly. You'll empty the magazine extremely quickly thanks to the fire rate increases from the Bruen MG89 Trigger.
For the fastest reaction times, the EXF Eclipsor Grip comes into its own thanks to faster movement speeds and sprint-to-fire time, allowing you to react quickly to any incoming targets.