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Work order — Stoeger M3000

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

85 parts across seven assembly drawings on a Benelli-pattern inertia action; the bolt group has a firing pin under spring pressure, a locking head that goes in one way, and an inertia spring whose omission makes the gun unsafe, and Stoeger reserves trigger-group stripping for a gunsmith. No timing. 85 parts (Seven assembly drawings with legends (trigger group T01-T26, bolt M01-M17, barrel N01-N09, fore-end E01-E07, magazine tube S01-S07, receiver G01-G10, stock D01-D09) - the complete gun). Pew-Takedown's rating, not the manufacturer's.

Bench time: strip ~50 min, rebuild ~70 min (estimate). Actual: strip ______ rebuild ______

Special tools:

• Long 13-17 mm socket on extension — Buttstock nut on the tension rod
• Padded vise and heat gun — Freeing a thread-locked recoil spring tube
• Punch set incl. 3/32 in. — Trigger group and bolt pins

Watch for:

• The bolt group must be assembled in a set order with the inertia spring between locking head and bolt; Stoeger warns improper assembly can cause an accidental discharge. (reassembly; Stoeger Industries)
• The firing pin is under spring pressure and has to be held with its spring while the retaining pin is pulled or refitted. (both; Stoeger Industries)
• The locking head only goes in one way: its slanted stem faces must be hidden. (reassembly; Stoeger Industries)
• Stoeger does not recommend stripping the trigger group except by a qualified gunsmith. (both; Stoeger Industries)

1. Clear and make safe

1. Point the muzzle in a safe direction and keep your finger off the trigger.
2. Engage the crossbolt safety.
3. Pull the bolt handle rearward to eject any chambered shell and lock the bolt open.
4. Cycle the action repeatedly, catching each shell as it ejects, until no more shells feed from the magazine tube.
5. With the action open, inspect the chamber and look up the magazine tube with a light.
   Warning: The chamber AND the tube. A shell hung up in the tube is easy to miss.
6. Physically confirm the chamber is empty and remove all live ammunition from the work area.

2. Disassemble

Field Strip

1. Complete the Clear and Make Safe procedure.
2. Unscrew the magazine cap from the end of the magazine tube and remove the forend.
3. Pull the barrel forward off the magazine tube and out of the receiver.
4. Pull the bolt handle out of the bolt.
5. Slide the bolt assembly forward and out of the receiver.
6. Push out the trigger group pin and lift the trigger group out of the receiver.
7. To separate the bolt, push out the firing pin retaining pin, withdraw the firing pin and spring, then push out the locking head pin and separate the bolt head from the bolt body.
   Warning: The inertia spring sits between the bolt head and bolt body. Note it and keep it.

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.

No manufacturer statement of materials or finish is recorded. Identify each part's material before choosing prep and cure.

The manufacturer's full parts list (85 parts) is on the reference page.

4. Reassemble

Reassembly

1. Seat the inertia spring into the bolt body, fit the bolt head over it, and insert the locking head pin.
   Warning: The inertia spring must be present and correctly seated or the shotgun will not cycle.
2. Install the firing pin, its spring, and the retaining pin.
3. Install the trigger group into the receiver and insert its pin.
4. Slide the bolt assembly into the receiver, engaging the link with the recoil spring plunger.
5. Install the bolt handle.
6. Seat the barrel fully and install the forend.
7. Thread the magazine cap on and hand-tighten firmly.
   Warning: Check the cap before every use.
8. 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: "Following assembly, and especially after firing a few rounds, make certain the forend cap is tightened firmly." (Stoeger M3000 Owner's Manual, PDF p. 19)

Fit or check on rebuild

• Recoil tube support and torque — The aluminium recoil tube is easily crushed or bent; refit square and tight without clamping the tube.
• Link seated on the recoil spring plunger — If the link misses the plunger when the bolt goes in, the gun will not cycle.
• Function check: safety, trigger/sear release, disconnector and feeding with dummy rounds — Standard after any detail strip; a mis-assembled sear or disconnector can double or fail to fire.

6. Function check

• Verify the shotgun is unloaded — chamber and magazine tube — before each step.
• Cycle the action by hand and confirm the bolt locks fully into battery.
• With the hammer cocked, engage the safety and press the trigger. The hammer must not fall.
• Disengage the safety and press the trigger. The hammer should fall.
• Confirm the bolt locks open when retracted and releases with the carrier release.
• Load two dummy shells into the magazine and confirm they feed and eject one at a time.
• Confirm the magazine cap is tight.

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

Sources

1. Stoeger M3000 Owner’s Manual — Stoeger Industries primary
2. Stoeger M3000 Owner's Manual — Stoeger Industries primary
   https://stoegerindustries.com/sites/default/files/content/media/manuals/2021-12/m3000_owners_manual.pdf
3. Benelli Super Black Eagle recoil spring replacement — Canadian Gun Nutz anecdotal
   https://www.canadiangunnutz.com/forum/threads/benelli-super-black-eagle-recoil-spring-replacement.1117189

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.