Walther’s Forgotten SMG: The MPK (and MPL)

Published on December 3, 2025
Duration: 15:41

This guide details the field stripping process for the Walther MPK and MPL submachine guns, as demonstrated by Ian McCollum. The process is straightforward, involving the removal of a single captive cross pin to separate the receivers and allow access to the bolt and recoil spring assembly. This procedure is essential for routine cleaning and maintenance of these historical firearms.

Quick Summary

The Walther MPK (Maschinenpistole Kurz) and MPL (Maschinenpistole Lang) are post-WWII submachine guns developed by Walther. The MPK has a 6.75-inch barrel and weighs 6.3 lbs, while the MPL has a 10.25-inch barrel and weighs 6.6 lbs. Both use 32-round 9mm magazines based on the Carl Gustaf M45 design and feature an open-bolt safety mechanism.

Chapters

  1. 00:00Introduction: Walther MPK/MPL
  2. 01:46Physical Specs and Magazines
  3. 02:52Stock and Ergonomics
  4. 04:01Controls and Charging Handle
  5. 05:49Safety Mechanisms and Rate of Fire
  6. 07:51Sights and Accuracy
  7. 09:26Disassembly and Internal Design

Frequently Asked Questions

What are the key differences between the Walther MPK and MPL?

The primary difference lies in barrel length and overall size. The MPK features a shorter 6.75-inch barrel and is more compact, while the MPL has a longer 10.25-inch barrel, making it slightly larger overall. Both share many design features and use the same 32-round 9mm magazines.

What safety features are present on the Walther MPK and MPL?

These submachine guns incorporate an ambidextrous fire selector for Safe, Semi-Auto, and Full-Auto modes. Crucially, they also feature a secondary sear catch that acts as an open-bolt safety, preventing accidental discharge if the firearm is dropped.

What is the rate of fire for the Walther MPK/MPL?

The Walther MPK and MPL have a manageable rate of fire of approximately 550 rounds per minute. This rate allows for good control during full-automatic fire, making it easier for the shooter to manage bursts and potentially fire controlled doubles.

How are the Walther MPK and MPL disassembled for cleaning?

Field stripping is relatively simple. It requires the removal of a single captive cross pin, allowing the upper and lower receivers to be separated. The bolt assembly and recoil spring can then be removed from the upper receiver for cleaning and maintenance.

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