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Beretta CX4 Storm
Not sure what you're looking at? Identify it from its markings · What the stamps on the barrel mean
Photo: Rama — CC BY-SA 2.0 fr · license · via Wikimedia Commons
Technical Specifications
| Type | Submachine gun · Pistol-calibre carbine |
|---|---|
| Country of origin | Italy |
| Manufacturer | Beretta |
| Designer | Beretta |
| Produced | 2003–present |
| Used by | See Users |
| Variants | Mx4 Storm |
| Weight | 2.48 kg (Mx4 Storm) · 2.575 kg (Cx4 Storm) |
| Length | 647 mm (Mx4 Storm) · 755 mm (Cx4 Storm) |
| Barrel length | 312 mm (Mx4 Storm) · 422.5 mm (Cx4 Storm) |
| Width | 63 mm |
| Height | 190 mm |
| Cartridge | 9×19mm Parabellum · 9×21mm IMI · .40 S&W · .45 ACP |
| Action | Straight Blowback |
| Feed | 8-, 10-, 11-, 14-, 15-, 17-, 20-, or 30-round box magazine |
| Muzzle velocity | 390 m/s |
| Rate of fire | ~1,000 rounds/min |
| Range | ~200 m |
Data from Beretta Cx4 Storm (Wikipedia, 2026-09-22). Text licensed under CC BY-SA. Image: CC BY-SA 2.0 fr — Rama.
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Date This Firearm
Own one? Read the date code beside the proof marks — the tool dates it from three published dealer/author ladders plus the national proof house's own rule. Beretta publishes no serial chart.
Beretta serial number lookup →