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Work order — Steyr AUG

Taking the firearm apart for a job such as refinishing, and putting it back together to specification. Generated from the Pew-Takedown entry last updated 2026-10-29. Confidence: medium.

Shop difficulty: Tier 2 of 3

106 pieces in six groups, so more parts than most rifles here. Steyr forbids any disassembly past the six-group field strip, so the hammer pack, bolt and stock internals have no maker procedure. Coatable metal is mainly the barrel and receiver, which separate easily, so it is Tier 2 rather than 3. 98 parts (Complete rifle, six groups (barrel, receiver, trigger, bolt, magazine, stock); 98 line items with item numbers restarting per group). Pew-Takedown's rating, not the manufacturer's.

Bench time: strip ~45 min, rebuild ~70 min (estimate). Actual: strip ______ rebuild ______

Special tools:

• Steyr armorer tools — Anything past the six-group field strip (factory-only per Steyr)

Watch for:

• Steyr allows nothing beyond the six-group field strip. Bolt, hammer pack and stock internals are factory-only, so there is no maker guidance for a detail strip. (both; Steyr Arms)

1. Clear and make safe

1. Point the muzzle in a safe direction and keep your finger off the trigger.
2. Place the selector on safe if the design allows it with the action in its current state.
3. Press the magazine release and remove the magazine.
4. Pull the charging handle fully to the rear and lock the action open if the rifle has a hold-open.
5. Inspect the chamber and magazine well with a light, then physically confirm the chamber is empty.
   Warning: Look and feel. Both, every time.
6. Remove all live ammunition from the work area.

2. Disassemble

Manufacturer's video: STEYR AUG SA Tuning Set (STEYR ARMS GmbH)
https://www.youtube.com/watch?v=ibNHTLR88nI
STEYR AUG SA QBC (quick barrel change) Set (STEYR ARMS GmbH)
https://www.youtube.com/watch?v=kr_GBdM_aQE

Field Strip

1. Complete the Clear and Make Safe procedure.
2. Press the barrel release button, rotate the barrel using the vertical foregrip, and withdraw the barrel forward out of the receiver.
   Warning: Hot after firing. Let it cool.
3. Push out the receiver/stock retaining pin at the rear of the stock.
4. Separate the receiver from the stock assembly.
5. Withdraw the bolt group and its guide rods rearward out of the receiver.
   Warning: The recoil springs are captive but the assembly is still under load.
6. Remove the trigger pack from the stock by releasing its retaining catch.

3. Refinish

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.

The manufacturer's full parts list (98 parts) is on the reference page.

4. Reassemble

Manufacturer's video: STEYR AUG SA Tuning Set (STEYR ARMS GmbH)
https://www.youtube.com/watch?v=ibNHTLR88nI
STEYR AUG SA QBC (quick barrel change) Set (STEYR ARMS GmbH)
https://www.youtube.com/watch?v=kr_GBdM_aQE

Reassembly

1. Fit the trigger pack back into the stock and confirm its catch engages.
2. Insert the bolt group and guide rods into the receiver from the rear and slide them forward.
3. Mate the receiver to the stock assembly and insert the retaining pin fully.
4. Insert the barrel into the receiver, rotate it until the locking lugs engage, and confirm the barrel release latches.
   Warning: Confirm the barrel is fully locked. Pull and twist it to verify before firing.
5. Cycle the action several times and perform the function check.

5. Torque

No manufacturer torque values are recorded for this firearm.

Notes: The manufacturer's documents give no torque value. They say: "Tighten the front screw clamp first by turning it clockwise and than tighten the rear clamp screw and check if it is affixed properly by trying to pull the scope rearward." (Original Optic Steyr AUG/A3 - operating instructions (BA 1706), PDF p. 10 (3. Mounting the Original Steyr AUG/A3 Optic))

Fit or check on rebuild

• Barrel locked — It must be fully locked before firing.
• Function check (safety, trigger reset, feeding, extraction) — Standard after any detail strip. No single source.
• Re-zero sights or scope — Sights and optics come off for coating, and point of impact must be re-confirmed. This is a standard check, so no source.

6. Function check

• Verify the rifle is unloaded with no magazine inserted before each step.
• Cycle the action by hand and confirm the bolt locks and returns fully to battery.
• With the selector on safe, press the trigger. The hammer or striker must not release.
• Move the selector 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 that any hold-open engages on an empty magazine.
• Confirm the barrel is locked in and will not rotate or withdraw.

If any check fails, the firearm is not safe to fire. Stop and see a licensed gunsmith.

Sources

1. Steyr AUG Operator’s Manual — Steyr Arms primary
2. Original Optic Steyr AUG/A3 - operating instructions (BA 1706) — Steyr Mannlicher GmbH / Steyr Arms primary
   https://www.steyr-arms.com/wp-content/uploads/2021/04/BA-STEYR-AUG-A3-OPTIC-EU-01-eng-de-1-BA-1706-2.pdf
3. Owner's Manual — Steyr AUG A3 M1 — Steyr Arms primary
   https://steyr-arms.us/wp-content/uploads/2023/07/AUG_A3_M1_US_2023.pdf
4. STEYR AUG SA — Specifications — Steyr Arms GmbH primary
   https://www.steyr-arms.com/en/sporting-rifles/aug-sa/

Educational guide only. Some information comes from non-authoritative sources. Always consult your manufacturer's manual and a licensed gunsmith. Verify your firearm is unloaded before every procedure. Full disclaimer: https://github.com/Fundamental-build-LLC/Pew-Takedown

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.