S10 weapon balance (I found this in Leakers on Duty discord, so it might be legit). Not only dev nerf MX9, they even buff MW11 to 3-shot kill. : r/CallOfDutyMobile
Black Ops 4: Full stats and best class setups for GKS and MX9 SMG weapons in Multiplayer - Dexerto
CoD Black Ops 4 Weapons Loadout Guide (Full Weapons List With Best Loadouts) | GAMERS DECIDE
ahh... MX9 SMG BUFF but MX9 Special Order... nah, Black Ops 4 (PS4 BO4 1.17 Update MX9 MKII Bundle) - YouTube
ahh... MX9 SMG BUFF but MX9 Special Order... nah, Black Ops 4 (PS4 BO4 1.17 Update MX9 MKII Bundle) - YouTube