NB! It seems this console command is not compatible with CS2.
Command Profile

MP_GGPROGRESSIVE_RANDOM_WEAPON_KILLS_NEEDED

CS:GO

If you have set mp_ggprogressive_use_random_weapons to enabled (1), this command can be used to set the amount of kills that are required to progress to the next weapon. Default is 2. This is used for gamemodes such as Arms Race (Gun Game).

Syntax
mp_ggprogressive_random_weapon_kills_needed [Amount]

Description

If you have set mp_ggprogressive_use_random_weapons to enabled (1), this command can be used to set the amount of kills that are required to progress to the next weapon. Default is 2. This is used for gamemodes such as Arms Race (Gun Game).

Syntax And Arguments

mp_ggprogressive_random_weapon_kills_needed [Amount]
Amount The amount of kills that are needed to progress to the next weapon.