9 millimeter, also known as 9mm (Yellow) in the game, is a type of Ammunition in surviv.io. It is also the most common type of ammunition found in the game.
|Very weak pistol. Common early-game.|
|"Upgraded" M9. Fully automatic with a bit less damage.|
|MP5||SMG||11||11.1||Fast Rate of Fire, yet low damage.|
|MAC-10||SMG||9.25||22.2||Faster RoF than the MP5, but even lower damage.|
|UMP9||SMG||15 (x3)||8.8||Burst-fire, but higher damage than other SMGs.|
|Vector||SMG||7.75||26.3||Less damage than the UMP9, but an incredible Rate of Fire.|
|Similar to the M9, but able to burst fire 3 rounds.|
|CZ-3A1||SMG||12||18.18||A suppressed SMG that shoots as fast as the Vector, but with a bullet fade effect.|
- As mentioned above, the 9mm ammunition in-game is based on the 9×19mm Parabellum cartridge, as all 9mm weapons currently in the game fire this round in real life.