Beretta Cx4 Storm Country Italy Type Semi-automatic rifle Manufacturer Beretta Introduction 2003 Specifications Weight 5.675 lbs (2.575 kg) (without magazine) Length 29.7 in (755 mm) Barrel length 16.6 in (422.5 mm) Width 2.5 in (63 mm) Height 7.5 in (190 mm) Cartridge 9mm Luger, 9 x 21 mm IMI, .40 S&W, .45 ACP Action Blowback Operated Semi-automatic Feed system 8-, 10-, 11-, 15-, 20-, or 30-round box magazine Sights Iron

The Beretta Cx4 Storm is a pistol-caliber carbine aimed at sporting, personal defense and law enforcement. Seven different models accept full-size Beretta magazines from the 92/96, Cougar, and Px4 series pistols in 9mm Luger, .40 S&W and .45 ACP. The cold-forged 16.6-inch (422 mm) barrel is chrome-lined to improve durability and corrosion resistance.

The Cx4 Storm was developed to be used in conjunction with other Beretta semi-automatic pistols. For example, the magazines for the Beretta 92FS chambered in 9 mm can be used in the Cx4 (also chambered in 9 mm). This aids in a smaller loadout — no longer needing to carry separate magazines for the rifle and handgun — and adds redundancy, allowing a person to carry more ammunition without adding weight.

In addition to being able to customize the Cx4 with accessories, it is one of only a few firearms with the ability to switch the safety, ejection port, and magazine release to the left side of the weapon to accommodate left-handed shooters.