Beretta CX4 Storm

What Makes the CX4 Storm Unique in the PCC Market?

The CX4 Storm’s defining characteristic is its magazine compatibility with Beretta pistols — the carbine accepts the same magazines as the Beretta 92FS, PX4 Storm, and other Beretta pistols depending on which magazine conversion kit is installed. For a shooter who already owns a Beretta 92 or PX4, the CX4 creates a seamless pistol/carbine pairing with shared magazines and manual of arms. The rotating bolt design, ambidextrous controls, and Italian-built quality give it a distinctly different character from AR-platform PCCs. The bullpup-like styling keeps overall length compact despite a 16.6″ barrel.

CX4 Storm Calibers and Configurations

Beretta produced the CX4 Storm in 9mm, .40 S&W, and .45 ACP, with 9mm being the most common and easiest to find ammunition for. Magazine compatibility varies by caliber — 9mm versions accept Beretta 92-series magazines; .40 and .45 versions use PX4 Storm or dedicated CX4 magazines. The Cx4 can be configured for right- or left-handed ejection by swapping the ejection port cover and bolt handle, making it genuinely ambidextrous. The 16.6″ barrel length adds approximately 150–200 fps over a 4″ pistol barrel with standard 9mm loads. All variants include a factory-threaded option for suppressor use on some production runs.

Is the CX4 Storm Still Worth Buying?

Yes — for the right buyer. The CX4 was discontinued from regular US import around 2019–2020, so new-in-box examples are increasingly uncommon and command premium prices on the secondary market. Used examples in good condition are a solid buy for a shooter who values the Beretta magazine commonality, Italian craftsmanship, or simply wants something different from the sea of AR-platform PCCs. Parts availability from Beretta USA remains reasonable for now, though long-term support is a consideration. For a shooter who doesn’t already own Beretta pistols or who wants to buy new with a warranty, the Ruger PC Carbine or Kel-Tec Sub-2000 are more practical current-production alternatives.

CX4 Storm vs. Ruger PC Carbine: Different Approaches to the Same Role

Both the CX4 and PC Carbine are 9mm pistol caliber carbines with magazine-sharing capability with specific pistols, but they take opposite design approaches. The PC Carbine uses a takedown design for maximum portability and accepts Glock or Ruger magazines. The CX4 uses a conventional fixed chassis with a rotating bolt and is optimized for Beretta magazine compatibility. The PC Carbine is a better choice for most buyers today given its availability, takedown feature, and Glock magazine compatibility. The CX4 is the better choice for a dedicated Beretta 92 owner who wants the magazine ecosystem or a collector who appreciates its unique Italian engineering.

What Accessories and Upgrades Are Available for the CX4?

The CX4 Storm ships with a Picatinny rail on top and under the barrel for optics and accessories. Red dot sights mount directly on the top rail — the CX4’s relatively low rail height suits compact red dots well. A forward vertical grip mounts on the underrail. Aftermarket support has diminished since discontinuation but Beretta still supplies magazines and basic parts. The stock features a built-in thumbhole design that some states may classify differently from conventional stocks; verify compliance with your state’s assault weapons laws if applicable. Spare magazine sourcing is the most important accessory consideration for CX4 buyers given the model’s discontinued status.

Related Pages

Browse all Beretta firearms, explore our full pistol caliber carbine selection, or compare with the Ruger PC Carbine for a current-production alternative.