The Beretta MX4 Storm is a submachine gun chambered in 9x19mm Para, with a barrel length of 12 inches. It is select-fire, with an automatic rate of fire of about 800 rpm.
The MX4 can use standard 92FS pistol magazines, or its own 30 round magazine. It has in integrated full-length rail for mounting various attachments.
The MX4 is a PDW featured in Battlefield 4.
It is the default weapon for the Engineer class, and comes equipped with a Reflex sight, Laser Sight, and Ergo Grip. It has above average power for a PDW, with a moderately high rate of fire, and medium-high (but manageable) recoil. Overall, it is a balanced PDW for close-medium range.
- The Mastery Dog Tag for the MX4 shows the gun equipped with a heavy barrel.