Level 10
it should already be unlocked at the beginning
The flamethrower is unlocked at level 65 along with the M1A1 carbine.
In Call of Duty 4: Modern Warfare, the M14 rifle is unlocked at Level 46 in multiplayer.
It is unlocked as one of your perks when you reach level 65.
The Desert Eagle* is unlocked at level 52.
The assualt rifle Acr is unlocked at level 48.
The Type 100 Sub-Machine Gun is unlocked at level 25. -Cry0-Joe
In Call of Duty: World at War, the Mosin-Nagant is unlocked at level 20. This bolt-action rifle is available for use in the multiplayer mode, where players can utilize its powerful performance in various combat scenarios. It is particularly favored for its accuracy and effectiveness at long range.
I think I unlocked it at level 18.
The AK-47 is unlocked at level 38 , and it costs 2000 cod points.
you can get it through the create a class, it should be unlocked straight away
Level 25