The submachine guns have a high-velocity bullet drop rate; you can unlock them at different ranks. Battlefield 2042 features both automatic and semi-automatic submachine guns.
| Submachine Gun Names | Description | |
 | K30 | The K30 is a machine gun that you can use in the primary weapon slot. It is unlocked at rank 53 and has a rate of fire of 1,150 RPM. It holds 20 rounds in its magazine and takes 2 seconds to reload partially, and it takes 2.6 seconds to reload when the magazine is empty. The K30 has a velocity of 420 m/s and a bullet drop of 9.81 m/s². |
 | MP9 | The MP9 is a machine gun that you can fire in automatic or semi-automatic mode. It has a magazine capacity of 30 rounds and fires at 900 rounds per minute. It has a velocity of 340 meters per second and a bullet drop of 9.81 meters per second squared. |
 | PBX-45 | The PBX-45 is a submachine gun that fires 800 rounds per minute. It takes 3.1 seconds to reload partially and 2.95 seconds to reload fully. The weapon has a velocity of 400 meters per second and a bullet drop of 9.81 meters per second squared. |
 | PP-29 | The PP-29 is a submachine gun that you can use in automatic or semi-automatic mode. It has a magazine capacity of 53 rounds and fires at 650 rounds per minute. It has a velocity of 520 meters per second and a bullet drop of 9.81 meters per second squared. |