MW4: Season 1 patch notes with weapon tuning

The official notes bring four new maps (Backstab, Canyon, Shoot House and Kill Block: Crash), the Grind and Drop Zone modes and tuning for several weapons, such as the M4, Kastov 762 and Rezi 12. See each weapon's changes in the Weapons section. Official post from 2026-11-05 (Modern Warfare 4).

Source: official post