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Work order — Mauser Karabiner 98k

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

A bolt action with a lot of furniture: two bands with band springs, a cleaning rod, the floor plate and follower, the trigger/sear, and the bolt stop with its ejector spring. The bolt's firing pin assembly takes real hand strength to compress and has to be reassembled the right way round, and the follower spring only goes back one way. No special tools beyond a hole in a bench block, but more traps than a modern bolt gun. 67 parts (stand-in: FN (Herstal) Model 98 rifle, Mauser system - the factory 'List of component parts of the F. N. Rifle (Mauser System)': rifle keys 1-40 and 81 (incl. 11a, 35a), 'Screws and pins' 41-55a (incl). Pew-Takedown's rating, not the manufacturer's.

Bench time: strip ~35 min, rebuild ~50 min (estimate). Actual: strip ______ rebuild ______

Special tools:

• Wood block with a firing-pin hole (or a Mauser firing pin tool) — Compressing the mainspring to remove the cocking piece
• Gunsmith screwdrivers — Guard screws and butt plate screws
• Pin punches — Bolt stop pin and trigger pin

Watch for:

• Taking the firing pin assembly apart means compressing a very strong mainspring by hand with the firing pin tip in a bench hole and turning the cocking piece 90°, then doing it again to reassemble. The firing pin is easy to bend. (both; Mitchell's Mausers)
• When the cocking piece goes back on, the sear has to line up with its slot in the bolt sleeve, and the safety must be vertical for the bolt to go back in. (reassembly; Mitchell's Mausers)
• The follower spring fits the floor plate and follower only one way; reversed, the follower jams feeding. (reassembly; Mitchell's Mausers)
• The extractor has to be turned back in line with the locking lug or the bolt will not go into the receiver. (reassembly; Mitchell's Mausers)

Tools

• Bore guide — Cleaning from the breech without wearing the throat or the crown. On a surplus rifle the crown is often the difference between accuracy and none.

1. Clear and make safe

1. Point the muzzle in a safe direction and keep your finger off the trigger.
2. Rotate the safety wing to the safe position.
3. Lift the bolt handle and draw the bolt fully rearward, extracting and ejecting any chambered round.
4. Press the floorplate release inside the front of the trigger guard and let the floorplate drop, releasing any rounds in the magazine — or cycle the bolt repeatedly to feed and eject each round.
5. Inspect the chamber and magazine well with a light and physically confirm the chamber is empty.
   Warning: Look and feel.
6. Close the floorplate and remove all live ammunition from the work area.

2. Disassemble

Field Strip — Bolt Removal

1. Complete the Clear and Make Safe procedure.
2. Rotate the safety wing to the middle (vertical) position.
   Tip: On a Mauser 98 the bolt will not come out with the safety fully left or fully right.
3. Lift the bolt handle and draw the bolt fully rearward.
4. Swing the bolt stop lever on the left side of the receiver outward and withdraw the bolt rearward out of the action.
5. Clean the bore from the breech using a bore guide, and clean the bolt face, lugs, and chamber.
   Warning: Always use a bore guide on a surplus rifle. Cleaning rod wear at the crown is a permanent accuracy loss and is very common on milsurp.
6. Stop here for routine maintenance. Bolt disassembly is a separate procedure and is not part of normal cleaning.

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.

4. Reassemble

Reassembly

1. With the safety wing in the middle position and the bolt cocked, align the bolt with the receiver raceway.
2. Slide the bolt forward into the receiver until it passes the bolt stop, then close the bolt handle.
3. Cycle the bolt several times to confirm smooth travel and correct cocking.
4. Perform the function check.

5. Torque

No manufacturer torque values are recorded for this firearm.

Fit or check on rebuild

• Bolt fitted to the rifle — Milsurp bolts are numbered to the rifle; mixing bolts changes headspace
• Guard screw tightening — The action and guard screws must be snugged evenly to keep the bedding
• Safety and cocking check — The safety must be vertical and the firing pin cocked for the bolt to go back in; check that the safety holds and the trigger releases

6. Function check

• Verify the rifle is unloaded — chamber and magazine — before each check.
• Cycle the bolt and confirm it cocks and closes fully into battery.
• With the action cocked, engage the safety and press the trigger. The striker must not release.
• Disengage the safety without touching the trigger. The striker must not release.
• Press the trigger and confirm the striker releases with a firm snap.
• Load dummy rounds and confirm they feed and eject cleanly.
• If you have any doubt about the rifle’s history, have headspace gauged by a gunsmith before firing live ammunition.
• Confirm the three-position safety works in all three positions: left blocks nothing for bolt operation, middle allows bolt removal and blocks the trigger, right blocks the trigger and locks the bolt.

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

Sources

1. Karabiner 98k Handbook (H.Dv. 240) — Wehrmacht primary
2. Mauser Military Rifles of the World — Robert W.D. Ball secondary
3. Owner's Manual for the Care and Use of the Mauser 98k - Model M48 (Mitchell's Mausers) — Mitchell's Mausers primary
   https://archive.org/download/lots-of-gun-pdfs-firearms-manuals/Gun%20PDFs/mitchell_mauser98.pdf
4. F.N. Mauser Model 98 Rifle and Carbine (Fabrique Nationale handbook, English), archive.org text layer — Fabrique Nationale d'Armes de Guerre, Herstal (scan on archive.org: firearms-fn-mauser-model-98-rifle-and-carbine) primary
   https://archive.org/download/firearms-fn-mauser-model-98-rifle-and-carbine/fnmausermodel98rifleandcarbine_djvu.txt

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.