Anvil 057: MP 18 After Action Report

Published on September 16, 2020
Duration: 56:50

This video details the complex reassembly and semi-automatic conversion of a historic MP 18 submachine gun. Mark Novak meticulously guides viewers through identifying and sorting small parts, understanding trigger group mechanics, and the physics behind cyclic rates. The demonstration culminates in a successful live-fire test of the converted firearm, emphasizing the importance of precise gunsmithing for historic weapon preservation and modification.

Quick Summary

Mark Novak demonstrates reassembling a historic MP 18 submachine gun, identifying parts by physical characteristics and explaining German design features like secondary locking pins. He details the trigger group's sear mechanism and uses physics analogies to explain cyclic rate adjustments for a semi-auto conversion.

Chapters

  1. 00:15Parts Identification & Layout
  2. 02:44Sorting Screws and Pins
  3. 05:11Trigger Housing & Sear Assembly
  4. 08:06Rear Sight and Front End Assembly
  5. 12:24Rate of Fire Physics Explained
  6. 15:53Final Assembly & Function Check
  7. 17:17Live Fire Testing: Semi-Auto Conversion

Frequently Asked Questions

How does Mark Novak identify parts for MP 18 reassembly without a manual?

Mark Novak identifies parts by examining their physical characteristics like screw holes, threads, and unique slot cuts. These features provide clues for proper assembly order and function, even without an original manual.

What are the key components of the MP 18 trigger group assembly?

The trigger group assembly involves the trigger, transfer rod, and sear. The sear pivots to release the bolt, and German design features include secondary pins locking screws in place.

How is the cyclic rate of a firearm like the MP 18 affected by its components?

The cyclic rate is influenced by the mass of moving parts like the bolt and the tension of the recoil spring. Reducing mass, similar to removing a pendulum from a clock, increases the frequency of operation.

What is crucial for a successful semi-automatic conversion of the MP 18?

A successful semi-auto conversion requires the sear to reliably catch the bolt after each shot. The safety mechanism must also function correctly to prevent accidental discharge.

More Gunsmithing & DIY Videos You Might Like

More from Mark Novak

View all →