{
  "apiVersion": 1,
  "kind": "work-order",
  "purpose": "Taking the firearm apart for a job such as refinishing, and putting it back together to specification.",
  "firearm": {
    "slug": "beretta-cx4-storm",
    "name": "Beretta Cx4 Storm",
    "manufacturer": {
      "id": "beretta",
      "name": "Beretta"
    },
    "category": "pistol-caliber-carbine",
    "action": "blowback",
    "calibers": [
      "9x19mm Parabellum",
      ".40 S&W",
      ".45 ACP"
    ],
    "alsoKnownAs": [
      "Cx4"
    ],
    "coversAlso": [
      "Cx4 Storm in 9mm, .40 S&W, and .45 ACP"
    ],
    "page": "firearms/beretta-cx4-storm.html",
    "bundle": "api/v1/firearms/beretta-cx4-storm.json",
    "lastUpdated": "2026-10-29"
  },
  "notices": [
    "Beretta limits owner disassembly: Field strip only: magazine out, receiver/barrel assembly separated from the stock (lower), cocking handle and bolt removed.",
    "This work order is written for the Beretta Cx4 Storm. It is reported to cover Cx4 Storm in 9mm, .40 S&W, and .45 ACP — if the firearm on the bench is one of those, check the torque notes: values do not always carry over.",
    "No torque values are recorded for this firearm. Get them from the manufacturer or a gunsmith; do not estimate."
  ],
  "disclaimer": {
    "headline": "Read this before you use anything here.",
    "points": [
      "This is a guide, not an authority. Entries are compiled from manufacturer manuals, technical manuals, published references, and community knowledge. Some of it comes from sources that are not authoritative, and some of it may simply be wrong.",
      "Always consult the manufacturer's manual for your specific firearm and serial-number range. Manufacturers change designs mid-production without renaming the model. The manual that shipped with your firearm outranks anything on this site.",
      "Consult a licensed gunsmith for anything beyond routine field stripping and cleaning, for any firearm you are unsure about, and for any procedure marked as gunsmith-recommended here.",
      "Treat every firearm as loaded. Verify it is unloaded, with the magazine removed and the chamber physically and visually checked, before any procedure in this database. Point it in a safe direction the entire time.",
      "Disassembly can damage a firearm or injure you. Springs are under tension, parts can launch, and reassembling a firearm incorrectly can make it unsafe to fire in a way that is not obvious from the outside. If a reassembled firearm does not pass a function check, stop and see a gunsmith.",
      "Torque values are shown in two groups. Values from the manufacturer or the issuing military are shown as such, with the document they came from. Values reported by anyone else — parts makers, gunsmithing publishers, articles, forums — are shown separately with who said them, how reliable that source is, and their exact words. Those are not specifications. Confirm any torque value with the manufacturer or a licensed gunsmith before relying on it.",
      "Nothing here is legal advice. Firearms law varies by country, state, and city, and some modifications or configurations are regulated or prohibited. You are responsible for knowing and following the law where you are.",
      "No warranty of any kind. Contributors and maintainers accept no liability for damage, injury, or loss arising from use of this material."
    ],
    "page": "disclaimer.html",
    "legal": {
      "summary": "Legal notice: this material is third-party information compiled from sources of varying reliability and is provided for general informational and educational purposes only. It is not gunsmithing, technical, safety or legal advice, it is not verified or endorsed by any manufacturer, and it must not be taken as fact. Any work on a firearm beyond the routine field stripping described in its own owner's manual should be performed only by a licensed and insured gunsmith. You use this material entirely at your own risk. Fundamental Build LLC and the project's contributors make no warranty of any kind and accept no liability for death, injury, damage or loss arising from its use. Full terms: LEGAL.md.",
      "page": "legal.html",
      "notice": "https://github.com/Fundamental-build-LLC/Pew-Takedown/blob/main/LEGAL.md"
    }
  },
  "sourcing": {
    "confidence": "medium",
    "verification": "community-reviewed"
  },
  "manufacturerDisassembly": {
    "status": "limited",
    "limit": "Field strip only: magazine out, receiver/barrel assembly separated from the stock (lower), cocking handle and bolt removed.",
    "statement": "Beretta says the carbine should not be disassembled for cleaning beyond what the manual describes; only a qualified gunsmith familiar with these firearms should go further. Altering firing-mechanism parts voids the warranty.",
    "source": {
      "title": "Carbine User Manual CX4 Storm (UT007448/00)",
      "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
      "reliability": "primary",
      "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
      "page": "39",
      "pdfPage": 41,
      "pageUrl": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf#page=41",
      "quote": "The firearm should not be disassembled for cleaning beyond what is described below. Only a qualified gunsmith who is familiar with these firearms should conduct further disassembly."
    }
  },
  "recalls": [],
  "shopTier": {
    "tier": 2,
    "group": "rifle",
    "rating": "Pew-Takedown editorial rating (1 easy – 3 hardest), not the manufacturer's",
    "reason": "A blowback carbine whose steel receiver/barrel sits in a polymer stock shell. The owner strip is easy, but the reversible extractor, ejector and port cover are orientation-sensitive (the cover must sit opposite the extractor), and the bolt's spring/spring guide is held by a clip. No published parts list.",
    "confidence": "low",
    "partCount": {
      "value": 73,
      "kind": "line-items",
      "covers": "complete carbine incl. magazine per Beretta's factory exploded view of the Cx4 Storm (9mm/.40/.45) reproduced on berettaweb.com: key numbers 1-73 on the drawing. The page's text parts table (Beretta p",
      "basis": "publication-diagram",
      "source": {
        "title": "Beretta Web - Exploded Views - P. Beretta model CX4 cal. 9mm - .40SW - .45ACP",
        "publisher": "BerettaWeb.com (unofficial Beretta site, Ugo Muffolini), reproducing Beretta product codes and exploded-view positions",
        "reliability": "secondary",
        "url": "https://www.berettaweb.com/sezionati/sez%20CX4.htm",
        "page": null,
        "pdfPage": null,
        "pageUrl": null,
        "quote": "SPHERE STEEL DIAM"
      }
    },
    "painPoints": [
      {
        "issue": "The ejector, extractor and ejection port cover swap sides; the cover must always be on the side opposite the extractor or cases mis-eject, and its protrusions must enter their recesses.",
        "during": "reassembly",
        "source": {
          "title": "Carbine User Manual CX4 Storm (UT007448/00)",
          "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "MUST always be mounted on the opposite side of the extractor in order to avoid possible mis-ejection of the case."
        }
      },
      {
        "issue": "The bolt's spring/spring-guide assembly is held by a retaining spring clip that is levered off and pushed back into its seat.",
        "during": "both",
        "source": {
          "title": "Carbine User Manual CX4 Storm (UT007448/00)",
          "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "Remove the retaining spring clip from the spring / spring guide assembly"
        }
      },
      {
        "issue": "Beretta advises working over a table and memorising part positions because components drop.",
        "during": "both",
        "source": {
          "title": "Carbine User Manual CX4 Storm (UT007448/00)",
          "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "It is advisable to carry out the field stripping and the assembly operations over a table to catch components should they drop."
        }
      }
    ],
    "minutes": {
      "strip": 35,
      "rebuild": 55,
      "basis": "estimated",
      "note": "Estimate: field strip, bolt (extractor, ejector, spring/guide, clip, cocking handle), ejection port cover, recoil pad and spacers, sling swivels, trigger group out of the stock shell, sights. Rebuild longer for orientation of the reversible parts.",
      "source": null
    },
    "stripScope": [
      {
        "assembly": "Bolt and barrel",
        "removes": [
          "bolt, extractor, ejector",
          "spring/spring guide and retaining clip",
          "cocking handle",
          "ejection port cover",
          "recoil spring assembly",
          "sights"
        ],
        "tools": [
          "drift punch"
        ]
      },
      {
        "assembly": "Stock shell",
        "removes": [
          "trigger group (removed as a unit)",
          "recoil pad and spacers",
          "sling swivels and screws",
          "magazine release"
        ]
      }
    ],
    "hardware": {
      "pins": 8,
      "springs": 12,
      "detents": 2,
      "basis": "counted by name in the text parts table (64 positions). Pins: swivel pin 004, sight pin 015, trigger bar pin 036, trigger pin 038, hammer pin 041, cheek rest retention pin 047, pin 050, inertia bolt s"
    },
    "specialTools": [
      {
        "tool": "Drift punch",
        "usedFor": "Ejection port cover"
      },
      {
        "tool": "Beretta sight tool (supplied)",
        "usedFor": "Rear/front sight adjustment"
      }
    ],
    "fitOnRebuild": [
      {
        "check": "Reversible parts orientation",
        "why": "Port cover opposite the extractor",
        "source": {
          "title": "Carbine User Manual CX4 Storm (UT007448/00)",
          "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "MUST always be mounted on the opposite side of the extractor in order to avoid possible mis-ejection of the case."
        }
      },
      {
        "check": "Sights re-zero",
        "why": "Sights moved for coating",
        "source": null
      }
    ],
    "assessed": "2026-10-29"
  },
  "videos": [],
  "configurations": [],
  "tools": [],
  "phases": [
    {
      "id": "clear",
      "title": "Clear and make safe",
      "steps": [
        {
          "n": 1,
          "instruction": "Point the muzzle in a safe direction and keep your finger off the trigger."
        },
        {
          "n": 2,
          "instruction": "Place the selector or safety on safe."
        },
        {
          "n": 3,
          "instruction": "Press the magazine release and remove the magazine.",
          "partsFreed": [
            "Magazine"
          ]
        },
        {
          "n": 4,
          "instruction": "Pull the charging handle fully to the rear and lock the action open if the design allows."
        },
        {
          "n": 5,
          "instruction": "Inspect the chamber and magazine well with a light, then physically confirm the chamber is empty.",
          "warning": "Look and feel. Both, every time."
        },
        {
          "n": 6,
          "instruction": "Remove all live ammunition from the work area."
        }
      ],
      "videos": []
    },
    {
      "id": "disassemble",
      "title": "Disassemble",
      "videos": [],
      "procedures": [
        {
          "procedure": "field-strip",
          "title": "Field Strip",
          "level": "field-strip",
          "configuration": false,
          "steps": [
            {
              "n": 1,
              "instruction": "Complete the Clear and Make Safe procedure with the safety on."
            },
            {
              "n": 2,
              "instruction": "Remove the buttstock retaining pin or fastener and separate the buttstock from the receiver.",
              "warning": "The recoil spring assembly is under compression behind it.",
              "partsFreed": [
                "Buttstock"
              ]
            },
            {
              "n": 3,
              "instruction": "Withdraw the bolt and recoil spring assembly rearward out of the receiver.",
              "partsFreed": [
                "Bolt",
                "Recoil spring assembly"
              ]
            },
            {
              "n": 4,
              "instruction": "Clean the bore, chamber, bolt face, and receiver interior."
            },
            {
              "n": 5,
              "instruction": "Stop here for routine cleaning. The trigger group is a modular assembly and is not owner-serviceable in any casual sense."
            }
          ]
        }
      ]
    },
    {
      "id": "refinish",
      "title": "Refinish",
      "components": [
        {
          "name": "Buttstock",
          "procedure": "field-strip",
          "level": "field-strip",
          "step": 2
        },
        {
          "name": "Bolt",
          "procedure": "field-strip",
          "level": "field-strip",
          "step": 3
        },
        {
          "name": "Recoil spring assembly",
          "procedure": "field-strip",
          "level": "field-strip",
          "step": 3
        }
      ],
      "manufacturerPartsList": null,
      "partsDiagrams": [],
      "materials": [
        {
          "component": "Frame/Receiver",
          "material": "technopolymer",
          "finish": null,
          "appliesTo": null,
          "note": null,
          "source": {
            "title": "Carbine User Manual CX4 Storm (UT007448/00)",
            "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
            "reliability": "primary",
            "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
            "page": null,
            "pdfPage": null,
            "pageUrl": null,
            "quote": "Frame/Receiver … In technopolymer"
          }
        },
        {
          "component": "Bolt",
          "material": "steel",
          "finish": null,
          "appliesTo": null,
          "note": null,
          "source": {
            "title": "Carbine User Manual CX4 Storm (UT007448/00)",
            "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
            "reliability": "primary",
            "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
            "page": null,
            "pdfPage": null,
            "pageUrl": null,
            "quote": "Bolt … In steel"
          }
        },
        {
          "component": "Barrel",
          "material": "steel",
          "finish": "chrome lined",
          "appliesTo": null,
          "note": null,
          "source": {
            "title": "Carbine User Manual CX4 Storm (UT007448/00)",
            "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
            "reliability": "primary",
            "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
            "page": null,
            "pdfPage": null,
            "pageUrl": null,
            "quote": "Barrel … In steel, cold hammer forged, chrome lined."
          }
        }
      ],
      "note": "The components the procedures above separate. Coating, masking and cure are outside this database; follow your coating system's instructions. A part the manufacturer marks \"factory fit\" should not be swapped or reworked."
    },
    {
      "id": "reassemble",
      "title": "Reassemble",
      "videos": [],
      "procedures": [
        {
          "procedure": "reassembly",
          "title": "Reassembly",
          "configuration": false,
          "steps": [
            {
              "n": 1,
              "instruction": "Insert the recoil spring assembly and bolt into the receiver and seat them."
            },
            {
              "n": 2,
              "instruction": "Refit the buttstock and install its retaining pin or fastener fully.",
              "warning": "Confirm the buttstock is secure before firing."
            },
            {
              "n": 3,
              "instruction": "Cycle the action several times and perform the function check."
            }
          ],
          "instruction": null
        }
      ]
    },
    {
      "id": "torque",
      "title": "Torque",
      "coverage": "none-recorded",
      "manufacturer": [],
      "reported": [],
      "notes": "The manufacturer's documents give no torque value. They say: \"Using the screwdriver, completely screw and tighten the screw in a clockwise direction on the stock.\" (Carbine User Manual CX4 Storm (UT007448/00), PDF p. 39 (stock length / spacer change, rear stock screw))"
    },
    {
      "id": "function-check",
      "title": "Function check",
      "checks": [
        "Verify the firearm is unloaded with no magazine inserted before each step.",
        "Cycle the action by hand and confirm the bolt returns fully into battery.",
        "With the safety on, press the trigger. The hammer must not release.",
        "Move the safety to fire, cycle the action, and press the trigger. It should release.",
        "Hold the trigger back, cycle the action, and release slowly to feel the disconnector reset.",
        "Confirm the magazine seats and locks positively.",
        "Confirm the buttstock is securely retained and the ejection port is configured for the side you are shooting from."
      ],
      "videos": []
    }
  ],
  "troubleshooting": [],
  "sources": [
    {
      "n": 1,
      "id": null,
      "title": "Beretta Cx4 Storm Use and Maintenance Manual",
      "publisher": "Fabbrica d’Armi Pietro Beretta",
      "reliability": "primary",
      "url": null,
      "accessed": null
    },
    {
      "n": 2,
      "id": "beretta-usa-fabbrica-d-armi-pietro-b-c40db3",
      "title": "Carbine User Manual CX4 Storm (UT007448/00)",
      "publisher": "Beretta USA / Fabbrica d'Armi Pietro Beretta S.p.A.",
      "reliability": "primary",
      "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/CX4_Storm_Manual.pdf",
      "accessed": "2026-09-27"
    },
    {
      "n": 3,
      "id": "tier-d10c4b52",
      "title": "Beretta Web - Exploded Views - P. Beretta model CX4 cal. 9mm - .40SW - .45ACP",
      "publisher": "BerettaWeb.com (unofficial Beretta site, Ugo Muffolini), reproducing Beretta product codes and exploded-view positions",
      "reliability": "secondary",
      "url": "https://www.berettaweb.com/sezionati/sez%20CX4.htm",
      "accessed": "2026-10-29"
    }
  ]
}