Disclaimer
- 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.
What the confidence ratings mean
Every entry carries a confidence rating and a verification status, because the quality of the underlying sources genuinely varies from entry to entry and you deserve to know which you are reading.
| Rating | Meaning |
|---|---|
| high | Cross-checked against a primary source such as the manufacturer's manual or an issuing military technical manual. |
| medium | Drawn from reliable secondary sources and consistent across references, but not confirmed against a primary source. |
| low | Compiled from limited or non-authoritative sources. Treat this entry as a starting point and verify before acting on it. |
Why this matters more than it might seem
Manufacturers change designs mid-production without changing the model name. Two firearms with identical rollmarks and serial numbers a few thousand apart can have different takedown procedures, different parts, and different failure modes. Surplus firearms have often been rebuilt with mixed parts from several factories. A guide like this one cannot account for your specific firearm — only its manual and a gunsmith who has it in hand can.
Use this database to understand how a design works, to know what to expect before you start, and to know what to look out for. Then check it against the manual that came with your firearm.
Legal notice
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.
The full legal notice and terms of use apply to this site, the data, and anything built from them.
Reporting errors
If you find something wrong here, please report it. An incorrect step in a disassembly guide is not a typo — it can damage a firearm or hurt someone. Open an issue and include the model, the specific step, what is wrong, and a source if you have one.