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"Renowned 9mm submachine gun in an elegant package that possesses a high rate of fire. An extended barrel upgrade increases its range."
— In-game description

The Mx4 Storm is a submachine gun featured in Tom Clancy's Rainbow Six Siege, introduced in the Operation Para Bellum expansion. It is available for use by the GIS Operator Alibi.


The Mx4 Storm is a military variant of the civilian, semi-automatic Cx4 Storm carbine. The submachine gun has a shorter barrel than the civilian counterpart and is capable of select-fire.

In-game, the Mx4 Storm is a submachine gun with low single shot damage but a high rate of fire. With a reasonably easy recoil and great headshot potential, this weapon dominates at close range, but can be somewhat challenging to use in long range engagements due to the horizontal recoil. One noteworthy trait of this weapon is its extremely slow reload time for a submachine gun of its scale.

Overall, the Mx4 Storm is a versatile submachine gun suited for most situations, and especially shines in short to medium range.


  • High rate of fire
  • Low recoil per shot
  • Versatile attachments


  • Slow reload speed
  • Low damage per shot

Weapon Attachments

Under Barrel


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