Prototype Silenced Sten Mk4(S) at the Range

Published on March 25, 2023
Duration: 5:08

This guide details the handling and firing of the prototype Sten Mk4(S) silenced submachine gun. It covers loading, semi-auto and burst fire modes, and emphasizes the weapon's surprisingly good handling characteristics due to its integrated suppressor and modifications like a lightened bolt. Expert Ian McCollum highlights the rarity and effectiveness of this suppressed variant.

Quick Summary

The prototype Sten Mk4(S) features a ported barrel and internal modifications like a lightened bolt and reduced recoil spring to ensure subsonic 9mm Parabellum performance (approx. 800 fps) and reliable cycling with its integrated suppressor. It offers surprisingly good handling and controllability during semi-auto and burst fire.

Chapters

  1. 00:00Introduction: Sten Mk4(S) Prototype
  2. 00:23Ergonomics, Caliber & Subsonic Ammo
  3. 01:11Live Fire: Semi-Auto & Burst Modes
  4. 02:46Mechanical Modifications for Suppression
  5. 03:45Historical Context & Conclusion

Frequently Asked Questions

What are the key modifications of the prototype Sten Mk4(S) for suppressed fire?

The Sten Mk4(S) features a ported barrel to reduce bullet velocity to subsonic levels (around 800 fps for 115-grain rounds) and a lightened bolt with a reduced-power recoil spring to ensure reliable cycling despite the lower gas pressure from the suppressor and barrel ports.

How does the Sten Mk4(S) handle during firing, especially in burst mode?

The prototype Sten Mk4(S) handles remarkably well during firing, even in burst mode. Its low recoil, combined with the added weight of the integrated suppressor and stock, makes it surprisingly easy to keep on target.

What ammunition is used with the Sten Mk4(S), and why?

The Sten Mk4(S) uses 9mm Parabellum ammunition. The ported barrel is specifically designed to reduce the velocity of standard 115-grain rounds to subsonic levels (approx. 800 fps) to maximize the effectiveness of the integrated suppressor.

What is the significance of the Sten Mk4(S) compared to other Sten models?

The Sten Mk4(S) is a rare prototype variant featuring an integrated suppressor, distinguishing it from the standard Sten Mk5 issued to paratroopers. Its design focuses on suppressed, subsonic fire and improved handling.

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