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Work order — Walther PDP

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: high.

Shop difficulty: Tier 1 of 3

55 position numbers in Walther's C/FS list (assemblies and sub-parts both listed) for a Glock-class striker gun with a pinned sear housing. Walther's own slide strip needs a 2 mm drift and has one hold-two-things step (safety plunger down while the extractor snaps in); the recoil assembly only goes one way. 55 parts (Walther PDP C & FS spare parts list 283 99 89 Rev. e, standard-parts positions (pp. 2-3) incl. model-specific placeholders and magazine positions; assemblies and their sub-parts both listed.). Pew-Takedown's rating, not the manufacturer's.

Bench time: strip ~15 min, rebuild ~25 min (estimate). Actual: strip ______ rebuild ______

Special tools:

• 5/64" (2 mm) drift punch — Slide end cap and extractor plunger (per Walther)
• dovetail sight pusher (or brass drift and padded vise) — Removing and refitting dovetailed sights for coating

Watch for:

• Refitting the extractor means holding the striker safety plunger down flush while the extractor is pressed home over its plunger, after a 2 mm drift has held the plunger down. (reassembly; Carl Walther GmbH)
• The striker safety plunger spring falls out unless held in its hole with a drop of gun oil. (reassembly; Carl Walther GmbH)

1. Clear and make safe

1. Point the muzzle in a safe direction and keep your finger off the trigger.
2. Press the magazine release and remove the magazine.
3. Retract the slide fully to eject any chambered round and lock it open.
4. Visually inspect the chamber and magazine well, then physically feel the chamber to confirm it is empty.
   Warning: Look and feel. Both, every time.
5. Remove all live ammunition from the work area.

2. Disassemble

Manufacturer's video: Walther PDP Match (Polymer Frame) Disassembly, Cleaning & Reassembly (WaltherFirearms)
https://www.youtube.com/watch?v=Ky3Uhv3UMUI

Field Strip

1. Complete the Clear and Make Safe procedure and put on safety glasses. Walther asks for them every time.
2. Point the pistol in a safe direction with your finger off the trigger, depress the magazine release and remove the magazine.
3. Pull the slide fully to the rear, press up on the slide stop lever while letting the slide move slightly forward, locking it open.
4. Look into the chamber AND down through the magazine well. Verify no ammunition remains.
   Warning: This is the inspection the next step depends on. Do both — chamber and magazine well.
5. Close the slide: pull it slightly to the rear and slowly release it forward.
6. Point the pistol in a safe direction and squeeze the trigger fully to the rear.
   Warning: This pistol requires a trigger press to field strip. Walther states it in capitals: if you have failed to properly unload and a live round is left in the chamber, the pistol WILL discharge. Visually inspect the chamber and the magazine well before your finger goes near the trigger.
7. Grip the takedown catch from above on both sides and press downwards.
   Tip: Both sides, from above, pressed down — not a rotating lever.
8. Move the slide forward and remove it from the frame.
9. Remove the recoil spring assembly, then the thread protector if the barrel is threaded (counter-clockwise), then the barrel.
10. Stop here. Walther instructs never to disassemble beyond this, and never to manipulate internal components.

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.

4. Reassemble

Manufacturer's video: Walther PDP Match (Polymer Frame) Disassembly, Cleaning & Reassembly (WaltherFirearms)
https://www.youtube.com/watch?v=Ky3Uhv3UMUI

Reassembly

1. Hold the slide upside down and place the barrel inside it with the locking lugs oriented as the manual's figure shows.
2. Refit the thread protector if the barrel is threaded.
3. Place the smaller end of the recoil rod into the spring mounting at the front of the slide, then insert the large polymer end of the recoil spring into the lower barrel recess while compressing it.
   Tip: Small end to the slide's front mounting, large polymer end into the barrel recess. They are not interchangeable.
4. Fit the slide onto the frame rails and run it rearward.
5. Return the takedown catch, cycle the slide, and perform the function check.

5. Torque

Reported by other sources — not the manufacturer

Fit or check on rebuild

• Striker safety sits just below the feed rib — Walther's own check that the safety spring is in the bottom of its blind hole
• Function check: trigger reset, sear/striker engagement, safeties — Standard post-reassembly check on any pistol whose fire-control parts were removed; a mis-seated spring shows up here, not on the bench

6. Function check

• Verify the pistol is unloaded with no magazine inserted before each check.
• Rack the slide and press the trigger. The striker should release cleanly.
• Hold the trigger to the rear, rack the slide, then release slowly and confirm the reset.
• Press the trigger again to confirm the striker releases.
• Confirm the slide locks open on an empty magazine and the magazine drops free.

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

If it won't go back together

Sources

1. Walther PDP Pistols Safety & Instruction Manual — Carl Walther GmbH primary
   https://carl-walther.de/uploads/media/manuals/283%2099%2071%20a%20PDP-Pistols%20USA%20Web.pdf
2. OPF-PDP v2, ACRO (product page) — Forward Controls Design secondary
   https://www.forwardcontrolsdesign.com/OPF-PDP-v2-ACRO_p_438.html
3. OPF-PDP v2, DPP (product page) — Forward Controls Design secondary
   https://www.forwardcontrolsdesign.com/OPF-PDP-v2-DPP_p_604.html
4. Walther PDP Standard Full Size 4.5" — Specifications — Walther Arms, Inc. (US importer for Carl Walther GmbH) primary
   https://waltherarms.com/defense/pdp/pdp-standard-full-size-4-5-in
5. XS Sights — Installation Instructions, XS Optic Plates (PDF linked from the XS product page) — XS Sights secondary
   https://xssights.com/content/Install%20Instructions/XS%20Optic%20Plate%20installation%20instructions.pdf
6. Spare part list PDP C & FS 9mm x 19, 9mm x 21 (283 99 89 Rev. e) — Carl Walther GmbH primary
   https://carlwalther.com/pdfs/Walther%20PDP%20C%20and%20FS%20283%2099%2089.pdf

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.