{
  "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-px4-storm",
    "name": "Beretta PX4 Storm",
    "manufacturer": {
      "id": "beretta",
      "name": "Beretta"
    },
    "category": "pistol",
    "action": "hammer-fired-short-recoil",
    "calibers": [
      "9x19mm Parabellum",
      ".40 S&W",
      ".45 ACP"
    ],
    "alsoKnownAs": [
      "PX4 Full Size",
      "PX4 Compact",
      "PX4 Subcompact"
    ],
    "coversAlso": [
      "PX4 Storm Full Size",
      "PX4 Storm Compact"
    ],
    "page": "firearms/beretta-px4-storm.html",
    "bundle": "api/v1/firearms/beretta-px4-storm.json",
    "lastUpdated": "2026-10-29"
  },
  "notices": [
    "Beretta limits owner disassembly: Field strip only: magazine, slide-barrel assembly off the frame, central block, recoil spring and guide, barrel out of the slide.",
    "This work order is written for the Beretta PX4 Storm. It is reported to cover PX4 Storm Full Size; PX4 Storm Compact — 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, slide-barrel assembly off the frame, central block, recoil spring and guide, barrel out of the slide.",
    "statement": "Beretta says no further disassembly is recommended unless done by a competent gunsmith; hammer-unit removal, magazine-release swap and other part changes are flagged for a competent gunsmith, and altering firing-mechanism parts voids the warranty.",
    "source": {
      "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
      "publisher": "Beretta U.S.A. Corp.",
      "reliability": "primary",
      "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
      "page": "21",
      "pdfPage": 23,
      "pageUrl": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf#page=23",
      "quote": "CAUTION: No further disassembly is recommended unless done by a competent gunsmith."
    }
  },
  "recalls": [],
  "shopTier": {
    "tier": 2,
    "group": "pistol",
    "rating": "Pew-Takedown editorial rating (1 easy – 3 hardest), not the manufacturer's",
    "reason": "No parts count found. A DA/SA rotating-barrel pistol with a removable hammer unit, a central cam block and a magazine release that must be held against its spring while the pin is re-engaged; Beretta puts all work past the field strip, including the hammer unit, with a competent gunsmith. Rated with the 92FS on design, not on counted parts.",
    "confidence": "low",
    "partCount": {
      "value": 67,
      "kind": "line-items",
      "covers": "complete PX4 Storm Full Size incl. magazine (keys 62-66) per the Beretta exploded view reproduced on berettaweb.com: drawing callouts 1-67; the accompanying parts table names 62 of them by Beretta par",
      "basis": "publication-diagram",
      "source": {
        "title": "Beretta PX4 Storm exploded view and spare parts list (Beretta Web, unofficial Beretta site by Ugo Muffolini)",
        "publisher": "berettaweb.com",
        "reliability": "secondary",
        "url": "https://berettaweb.com/sezionati/sez%20PX4%20STORM.htm",
        "page": null,
        "pdfPage": null,
        "pageUrl": null,
        "quote": "PAD ASSY +3 ROUNDS FOR PX4 STORM FULL SIZE"
      }
    },
    "painPoints": [
      {
        "issue": "Beretta restricts everything past the field strip to a competent gunsmith.",
        "during": "both",
        "source": {
          "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
          "publisher": "Beretta U.S.A. Corp.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "CAUTION: No further disassembly is recommended unless done by a competent gunsmith."
        }
      },
      {
        "issue": "The hammer mechanism is a separate unit that comes out without special tools, but Beretta still classes its removal as gunsmith work.",
        "during": "both",
        "source": {
          "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
          "publisher": "Beretta U.S.A. Corp.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "When necessary, the hammer mechanism can even be removed in the field by qualified personnel. WARNING: This operation must be carried out by a competent gunsmith."
        }
      },
      {
        "issue": "The magazine release button and spring must be held in their seat with one finger while the internal pin on the other side is pushed home to capture them.",
        "during": "reassembly",
        "source": {
          "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
          "publisher": "Beretta U.S.A. Corp.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "Keep it in place with one finger and at the same time, firmly push on the head of the internal pin (opposite side of the button) so that it will engage the button."
        }
      }
    ],
    "minutes": {
      "strip": 30,
      "rebuild": 45,
      "basis": "estimated",
      "note": "Estimate for an experienced tech with the right tools, detail strip to coatable parts (slide internals, frame pins, trigger group, sights) and rebuild to a function-checked gun; scale used across pistols: Glock-pattern 15/20 min, other strikers 20-30/25-40, DA/SA hammer guns 30-35/45-50, Hi-Power, Colt 1903 and Mark 23 40-45/60-75. No parts list;",
      "source": null
    },
    "stripScope": [
      {
        "assembly": "Slide",
        "removes": [
          "safety/decocker (F model)",
          "firing pin and firing pin block",
          "extractor",
          "sights"
        ]
      },
      {
        "assembly": "Barrel",
        "removes": [
          "rotating barrel",
          "central block",
          "recoil spring and guide"
        ]
      },
      {
        "assembly": "Frame",
        "removes": [
          "hammer unit (hammer mechanism group)",
          "trigger and trigger bar",
          "slide catch",
          "disassembly latch",
          "magazine release button, spring and pin",
          "backstrap and U-spring"
        ],
        "tools": [
          "drift punch",
          "flat screwdriver"
        ]
      }
    ],
    "hardware": {
      "pins": 10,
      "springs": 17,
      "detents": 1,
      "basis": "counted by name in the same parts table (one per key number): pins = 006 elastic pin 3x12, 014 elastic pin 2x10, 027 lever assembly pin, 028 sear pin, 031 hammer pin, 036 elastic pin 1,5x5, 041 trigge"
    },
    "specialTools": [
      {
        "tool": "Drift punch sized to the magazine release pin hole",
        "usedFor": "Magazine release button pin"
      },
      {
        "tool": "Small hammer",
        "usedFor": "Seating the backstrap U-spring"
      }
    ],
    "fitOnRebuild": [
      {
        "check": "Disassembly latch fully rotated up",
        "why": "A latch not fully rotated up lets the slide come off while shooting",
        "source": null
      },
      {
        "check": "Magazine release captured",
        "why": "The manual has the tech try to pull the button out to confirm the internal pin engaged",
        "source": {
          "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
          "publisher": "Beretta U.S.A. Corp.",
          "reliability": "primary",
          "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
          "page": null,
          "pdfPage": null,
          "pageUrl": null,
          "quote": "Try to remove the button from its seat to check that it is properly fixed."
        }
      },
      {
        "check": "Full function check (trigger reset, safeties, slide lock-back, drop of striker/hammer only on trigger)",
        "why": "Standard after any fire-control strip; confirms springs and sears went back correctly",
        "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": "Press the magazine release and remove the magazine.",
          "partsFreed": [
            "Magazine"
          ]
        },
        {
          "n": 3,
          "instruction": "Retract the slide fully to eject any chambered round and lock it open."
        },
        {
          "n": 4,
          "instruction": "Visually inspect the chamber and magazine well, then physically feel the chamber to confirm it is empty.",
          "warning": "Look and feel. Both, every time."
        },
        {
          "n": 5,
          "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, release the slide forward, and place the safety lever in the fire position."
            },
            {
              "n": 2,
              "instruction": "Press and hold the disassembly latch release button on the right side of the frame."
            },
            {
              "n": 3,
              "instruction": "While holding the button, rotate the disassembly latch on the left side of the frame downward until it stops."
            },
            {
              "n": 4,
              "instruction": "Push the slide assembly forward and off the front of the frame.",
              "partsFreed": [
                "Slide assembly"
              ]
            },
            {
              "n": 5,
              "instruction": "Lift the recoil spring assembly out of the inverted slide.",
              "warning": "Under spring tension — keep a thumb on it.",
              "partsFreed": [
                "Recoil spring assembly"
              ]
            },
            {
              "n": 6,
              "instruction": "Lift the barrel and its rotating cam block out of the slide.",
              "tip": "The barrel lifts out with its cam block as a unit. Note its orientation.",
              "partsFreed": [
                "Barrel assembly"
              ]
            }
          ]
        }
      ]
    },
    {
      "id": "refinish",
      "title": "Refinish",
      "components": [
        {
          "name": "Slide assembly",
          "procedure": "field-strip",
          "level": "field-strip",
          "step": 4
        },
        {
          "name": "Recoil spring assembly",
          "procedure": "field-strip",
          "level": "field-strip",
          "step": 5
        },
        {
          "name": "Barrel assembly",
          "procedure": "field-strip",
          "level": "field-strip",
          "step": 6
        }
      ],
      "manufacturerPartsList": null,
      "partsDiagrams": [],
      "materials": [
        {
          "component": "Frame",
          "material": "Reinforced fiberglass technopolymer",
          "finish": null,
          "appliesTo": "Px4 Storm Full Size F/G/D",
          "note": null,
          "source": {
            "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
            "publisher": "Beretta U.S.A. Corp.",
            "reliability": "primary",
            "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
            "page": null,
            "pdfPage": null,
            "pageUrl": null,
            "quote": "Frame … Reinforced fiberglass technopolymer."
          }
        },
        {
          "component": "Slide",
          "material": "Steel",
          "finish": "sandblasted, phosphatized and Bruniton coated",
          "appliesTo": null,
          "note": null,
          "source": {
            "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
            "publisher": "Beretta U.S.A. Corp.",
            "reliability": "primary",
            "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
            "page": null,
            "pdfPage": null,
            "pageUrl": null,
            "quote": "Slide … Steel, sandblasted, phosphatized and Bruniton coated."
          }
        },
        {
          "component": "Barrel",
          "material": "Steel",
          "finish": "sandblasted and blued",
          "appliesTo": null,
          "note": null,
          "source": {
            "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
            "publisher": "Beretta U.S.A. Corp.",
            "reliability": "primary",
            "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
            "page": null,
            "pdfPage": null,
            "pageUrl": null,
            "quote": "Barrel … Steel, sandblasted and blued. Internally chromium-plated."
          }
        }
      ],
      "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": "Set the barrel assembly into the inverted slide in its correct orientation and seat it fully forward."
            },
            {
              "n": 2,
              "instruction": "Seat the recoil spring assembly into the barrel lug cut and press it down into the slide."
            },
            {
              "n": 3,
              "instruction": "Set the slide onto the frame rails and push it rearward until it seats fully."
            },
            {
              "n": 4,
              "instruction": "Rotate the disassembly latch upward until it clicks and the release button pops back out.",
              "warning": "If the latch is not fully rotated up, the slide can come off under recoil."
            },
            {
              "n": 5,
              "instruction": "Rack the slide several times and perform the function check."
            }
          ],
          "instruction": null
        }
      ]
    },
    {
      "id": "torque",
      "title": "Torque",
      "coverage": "none-recorded",
      "manufacturer": [],
      "reported": [],
      "notes": null
    },
    {
      "id": "function-check",
      "title": "Function check",
      "checks": [
        "Verify the pistol is unloaded with no magazine inserted before each check.",
        "With the hammer down, press the trigger for a double-action hammer fall.",
        "Cock the hammer and operate the decocking lever. The hammer should fall safely without the firing pin being struck.",
        "Rack the slide and press the trigger for a single-action break.",
        "Hold the trigger back, rack the slide, release slowly and confirm the reset.",
        "Confirm the slide locks open on an empty magazine and the magazine drops free."
      ],
      "videos": []
    }
  ],
  "troubleshooting": [],
  "sources": [
    {
      "n": 1,
      "id": null,
      "title": "Beretta PX4 Storm Pistol Owner’s Manual",
      "publisher": "Fabbrica d’Armi Pietro Beretta",
      "reliability": "primary",
      "url": null,
      "accessed": null
    },
    {
      "n": 2,
      "id": "dam-specs-a9209e",
      "title": "Beretta Px4 Storm Pistol Owner's Manual (C62009 003) — Specifications and Technical Data",
      "publisher": "Beretta U.S.A. Corp.",
      "reliability": "primary",
      "url": "https://dam.beretta.com/content/dam/beretta-usa/user-manuals/PX4_Storm_Manual.pdf",
      "accessed": "2026-10-03"
    },
    {
      "n": 3,
      "id": "tier-c4090c91",
      "title": "Beretta PX4 Storm exploded view and spare parts list (Beretta Web, unofficial Beretta site by Ugo Muffolini)",
      "publisher": "berettaweb.com",
      "reliability": "secondary",
      "url": "https://berettaweb.com/sezionati/sez%20PX4%20STORM.htm",
      "accessed": "2026-10-29"
    }
  ]
}