{ "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": "cz-scorpion-evo-3", "name": "CZ Scorpion EVO 3 S1", "manufacturer": { "id": "cz", "name": "Česká zbrojovka (CZ)" }, "category": "pistol-caliber-carbine", "action": "blowback", "calibers": [ "9x19mm Parabellum" ], "alsoKnownAs": [ "Scorpion EVO 3", "Scorpion Carbine" ], "coversAlso": [ "Scorpion EVO 3 S1 Pistol and Carbine", "Scorpion EVO 3 S2" ], "page": "firearms/cz-scorpion-evo-3.html", "bundle": "api/v1/firearms/cz-scorpion-evo-3.json", "lastUpdated": "2026-10-29" }, "notices": [ "Česká zbrojovka (CZ) limits owner disassembly: Field strip: trigger unit off the receiver (disassembly pin), then the slide (bolt) with recoil spring out of the receiver; no tools.", "This work order is written for the CZ Scorpion EVO 3 S1. It is reported to cover Scorpion EVO 3 S1 Pistol and Carbine; Scorpion EVO 3 S2 — 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": "high", "verification": "manufacturer-manual-verified" }, "manufacturerDisassembly": { "status": "limited", "limit": "Field strip: trigger unit off the receiver (disassembly pin), then the slide (bolt) with recoil spring out of the receiver; no tools.", "statement": "CZ tells owners not to strip the firearm any further than the cleaning strip; adjustment or repair should go to a competent gunsmith in a specialized workshop.", "source": { "title": "CZ Scorpion EVO 3 S1 Instruction Manual", "publisher": "Česká zbrojovka a.s. Uherský Brod", "reliability": "primary", "url": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf", "page": "9", "pdfPage": 10, "pageUrl": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf#page=10", "quote": "CAUTION: Do not strip your firearm any further. If you assume that your firearm requires adjustment or repair, entrust this work to a competent gunsmith in a specialized workshop!" } }, "recalls": [], "shopTier": { "tier": 2, "group": "rifle", "rating": "Pew-Takedown editorial rating (1 easy – 3 hardest), not the manufacturer's", "reason": "There are 88 line items (98 pieces), with 14 springs and 15 pins in a hammer-fired trigger group housed in a polymer lower. CZ stops the owner at the field strip. The fire control and stock hinge parts go in order, with no timing or special tool.", "confidence": "medium", "partCount": { "value": 88, "kind": "line-items", "covers": "Scorpion EVO 3 S list (all versions, English section)", "basis": "manufacturer-parts-list", "source": { "title": "CZ Scorpion EVO 3 S1 Instruction Manual", "publisher": "Česká zbrojovka a.s. Uherský Brod", "reliability": "primary", "url": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf", "page": "12", "pdfPage": 13, "pageUrl": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf#page=13", "quote": "90 AR shoulder stock" } }, "painPoints": [ { "issue": "CZ tells the owner not to strip further than the field strip and to leave repair to a gunsmith.", "during": "both", "source": { "title": "CZ Scorpion EVO 3 S1 Instruction Manual", "publisher": "Česká zbrojovka a.s. Uherský Brod", "reliability": "primary", "url": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf", "page": null, "pdfPage": null, "pageUrl": null, "quote": "Do not strip your firearm any further. If you assume that your firearm requires adjustment or repair, entrust this work to a competent gunsmith in a specialized workshop!" } }, { "issue": "Parts and springs can be ejected during the strip; the cocking handle is held by a spring under the hand guard pin.", "during": "both", "source": { "title": "CZ Scorpion EVO 3 S1 Instruction Manual", "publisher": "Česká zbrojovka a.s. Uherský Brod", "reliability": "primary", "url": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf", "page": null, "pdfPage": null, "pageUrl": null, "quote": "While stripping the gun make sure that no part or spring is ejected, lost or that it causes injuries." } }, { "issue": "The fire control group has many small springs (hammer, hammer catch, trigger, striking mechanism, slide release) to place correctly in the polymer lower.", "during": "reassembly", "source": { "title": "CZ Scorpion EVO 3 S1 Instruction Manual", "publisher": "Česká zbrojovka a.s. Uherský Brod", "reliability": "primary", "url": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf", "page": null, "pdfPage": null, "pageUrl": null, "quote": "Hammer catch spring" } } ], "minutes": { "strip": 45, "rebuild": 70, "basis": "estimated", "note": "Estimate: field strip (lower, bolt, recoil spring), fire control group out of the lower, handguard and cocking handle, sights, stock and hinge, mag catch, bolt strip. Rebuild longer for the trigger group springs.", "source": null }, "stripScope": [ { "assembly": "Lower / fire control", "removes": [ "hammer, hammer pin and spring", "hammer catch and spring", "trigger, trigger pins and spring", "safety and plug", "magazine catch, pin and spring", "slide release and spring" ], "tools": [ "pin punches" ] }, { "assembly": "Upper", "removes": [ "bolt (striker, striker spring, extractor, pin and spring, striker block and spring)", "recoil spring and washer", "hand guard, pin and cocking handle", "sights", "muzzle device" ] }, { "assembly": "Stock", "removes": [ "stock, joint pin, positioner and spring, catch and spring, retaining button and spring" ] } ], "hardware": { "pins": 16, "springs": 16, "detents": 0, "basis": "counted from the manufacturer's parts list (one per key number unless a quantity is given)" }, "specialTools": [ { "tool": "Pin punches (polymer-safe, with a bench block)", "usedFor": "Trigger group and stock pins" }, { "tool": "Sight tool", "usedFor": "Rear drum sight (only if moved)" } ], "fitOnRebuild": [ { "check": "Function check", "why": "Hammer catch, disconnect and safety checked after the fire control goes back", "source": null }, { "check": "Zero", "why": "Sights/optics re-zeroed", "source": null } ], "assessed": "2026-10-29" }, "videos": [ { "title": "CZ Scorpion Tap/Rack with Mike Pannone", "url": "https://www.youtube.com/watch?v=GGJDQCUim3E", "platform": "youtube", "embedUrl": null, "shows": [ "operation" ], "appliesTo": "CZ Scorpion EVO 3 (2017, pre-3+)", "published": "2017-03-13", "note": null, "channel": { "id": "UC3y6sVNuGbim-zRTMalhIaA", "name": "czusafirearms", "url": "https://www.youtube.com/@czusafirearms", "owner": "CZ-USA (US subsidiary)" }, "accessed": "2026-10-15" } ], "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 or operate the magazine release and remove the magazine.", "partsFreed": [ "Magazine" ] }, { "n": 4, "instruction": "Pull the charging handle fully to the rear and lock the bolt open if the design allows." }, { "n": 5, "instruction": "Inspect the chamber and magazine well with a light and 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 and remove the magazine." }, { "n": 2, "instruction": "Unfold the shoulder stock or brace, if fitted.", "tip": "You need the room behind the receiver to draw the trigger unit back." }, { "n": 3, "instruction": "Set the fire mode lever to the fire position.", "warning": "Confirm the chamber is empty before moving the selector off safe." }, { "n": 4, "instruction": "Draw the slide fully rearward with the cocking handle and retain it by pushing the handle upwards. The slide is now locked in the rear position." }, { "n": 5, "instruction": "Grip the pistol grip tightly in one hand. With the thumb of the other, push on the front part of the trigger unit and press the outer part of the disassembly pin. Draw the pin out of the other side to its outermost position.", "tip": "The pin does not come all the way out — it stops at its outermost position." }, { "n": 6, "instruction": "Grasp the trigger unit case at the magazine housing and remove it by pulling backward and downward.", "partsFreed": [ "Trigger unit / lower" ] }, { "n": 7, "instruction": "Move the slide slightly rearward with your thumb and pull it downwards. The slide comes out together with the recoil spring.", "warning": "Keep control of the recoil spring.", "partsFreed": [ "Slide (bolt carrier)", "Recoil spring" ] }, { "n": 8, "instruction": "Stop here. The manual states no further disassembly is needed for routine maintenance, and warns to watch that no part or spring is ejected or lost during stripping." } ] } ] }, { "id": "refinish", "title": "Refinish", "components": [ { "name": "Trigger unit / lower", "procedure": "field-strip", "level": "field-strip", "step": 6 }, { "name": "Slide (bolt carrier)", "procedure": "field-strip", "level": "field-strip", "step": 7 }, { "name": "Recoil spring", "procedure": "field-strip", "level": "field-strip", "step": 7 } ], "manufacturerPartsList": { "parts": 88, "scope": "Single Scorpion EVO 3 S list (English section) covering all versions in the manual (EVO 3 S1 pistol, S1 Carbine etc.); rows marked * vary by version or are absent. ES/CS/DE/FR copies omitted." }, "partsDiagrams": [], "materials": [], "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": "Fit the slide and recoil spring back into the receiver, pushing up and then slightly forward into their rails." }, { "n": 2, "instruction": "Bring the trigger unit up to the receiver from below and forward, seating it at the magazine housing." }, { "n": 3, "instruction": "Press the disassembly pin back through until it is flush." }, { "n": 4, "instruction": "Return the fire mode lever to safe." }, { "n": 5, "instruction": "Cycle the action several times with the cocking handle 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: \"When installing a non-folding shoulder stock of the AR type, it is necessary to fix the tube position by two locking screws and then tighten the tube nut to 45 N ± 10 %.\" (CZ Scorpion EVO 3 S1 Instruction Manual, PDF p. 9 (\"Removing the shoulder stock\")) \"The pistol grip can be moved forwards or backwards by loosening the grip screw. After the pistol grip is adjusted the screw must be secured.\" (CZ Scorpion EVO 3 S1 Instruction Manual, PDF p. 9)" }, { "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 or striker 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 and releases cleanly.", "Confirm both receiver pins are fully seated." ], "videos": [] } ], "troubleshooting": [], "sources": [ { "n": 1, "id": "cz-scorpion-evo-3-manual", "title": "CZ Scorpion EVO 3 S1 Instruction Manual", "publisher": "Česká zbrojovka a.s. Uherský Brod", "reliability": "primary", "url": "https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/735342000167_cz_scorpion_evo_3_s_en_es_cs_de_fr_11_2024_0abea205a5.pdf", "accessed": "2026-09-14" } ] }