The MP40 Full Auto Submachine Gun

Published on May 26, 2015
Duration: 7:09

The MP40 submachine gun, a WWII icon, is reviewed for its historical significance and performance. Its full-auto-only design features a unique constant recoil mechanism for smooth operation and a relatively slow cyclic rate that aids controllability. The folding stock is highlighted as a key ergonomic advantage, especially for vehicle crews. Field stripping reveals its innovative telescoping firing pin assembly, and it reliably handles various 9mm ammunition types.

Quick Summary

The German MP40 submachine gun features a unique 'constant recoil' mechanism, using a telescoping firing pin as a pneumatic buffer for smooth operation. While full-auto only, its slow cyclic rate aids controllability, and the folding stock is ideal for vehicle crews.

Chapters

  1. 00:00Introduction to the MP40
  2. 00:41Constant Recoil Mechanism Explained
  3. 01:40Full Auto Firing & Cyclic Rate
  4. 02:30Controllability & Folding Stock
  5. 04:10Field Stripping the MP40
  6. 05:529mm Ammunition Testing

Frequently Asked Questions

What makes the MP40's operation smooth?

The MP40 utilizes a 'constant recoil' mechanism. Unlike many firearms, its bolt doesn't slam into the rear of the receiver. Instead, a telescoping firing pin acts as a pneumatic buffer, absorbing recoil energy for smoother cycling.

Is the MP40 select-fire?

No, the MP40 is full-auto only and does not feature a select-fire switch for semi-automatic or safe modes. However, its relatively slow cyclic rate allows experienced shooters to achieve controlled single shots or short bursts.

What are the advantages of the MP40's folding stock?

The folding stock is a significant ergonomic advantage, especially for vehicle crews. It allows the MP40 to be stored more compactly, making it easier to handle and deploy in confined spaces.

How does the MP40 handle different types of 9mm ammunition?

During testing, the MP40 showed consistent performance regardless of the 9mm ammunition used. It reliably fired both 124-grain brass-cased and 115-grain steel-cased loads without noticeable changes in its cyclic rate.

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