Counter Strike Online Wiki

Beretta MX4 Storm or 9mm Storm is an Italian submachine gun in Counter-Strike Online 2.


The Beretta Mx4 Storm is the military version of the Beretta Cx4 Storm pistol-caliber carbine. It has a barrel length of 12 inches and is capable of automatic fire. The Mx4 uses its own 30 rounds magazine. It has a reputation for reliability and ease of use among the many police and security personnel who use it.


  • Very high rate of fire
  • Light weight
  • Low recoil
  • Cheap


  • Low accuracy
  • Low damage

Weapon unlock system[]

The player can choose to unlock the Mx4 Storm instead of buying from shop, by collecting 200 kill points from MP5.

Release date[]

  • South Korea: 31 October 2013.
  • China: 25 March 2015.
  • Taiwan/Hong Kong: 22 June 2016.


Pulling the bolt

Inserting new magazine

Taking out old magazine

Drawing sound

Shooting sound

External links[]