The Short-Lived Suomi SMG for Armored Vehicle Mounts

Published on January 31, 2022
Duration: 5:45

This guide details the disassembly of the rare Tank Suomi M31 SMG, focusing on the removal of its specialized barrel shroud designed for armored vehicle mounts. It covers the quick-detach mechanism and the modular concept for bail-out scenarios. The information is presented with the authority of Ian McCollum, an expert in historical firearms.

Quick Summary

The Tank Suomi M31, a rare variant of the Finnish SMG, was adapted for armored vehicles with a pistol grip, shortened length, and a heavy barrel shroud for mounting. It lacked traditional sights, relying on instinctive aiming. By 1944, it was superseded by more powerful and available Soviet DT machine guns.

Chapters

  1. 00:00Introduction to the Tank Suomi
  2. 00:45Vehicle-Specific Modifications
  3. 01:12Weight and Barrel Jacket
  4. 02:08Barrel Shroud Mechanics
  5. 03:16Sighting System
  6. 03:40Modular Bail-out Concept
  7. 04:28Historical Context and Obsolescence

Frequently Asked Questions

What modifications were made to the M31 Suomi for armored vehicle use?

The M31 Suomi was modified for armored vehicles by removing the stock and adding a vertical wooden pistol grip to reduce length. It also featured a heavy, ventilated barrel shroud with a flange for vehicle mounting and lacked a front sight for instinctive aiming.

Why was the Tank Suomi M31 replaced by Soviet DT machine guns?

By 1944, the Tank Suomi M31 variants were replaced by captured Soviet DT (Degtyarev) tank machine guns. The DTs were considered more powerful, utilized rifle-caliber ammunition, and were available in significantly larger quantities, making them a more practical choice.

What is the purpose of the Tank Suomi's barrel shroud?

The Tank Suomi's specialized barrel shroud is designed to fit into a ball mount on an armored vehicle, allowing the submachine gun to be securely attached. It also features a quick-detach mechanism for rapid removal, enabling tank crews to use the weapon if they need to bail out.

More Gunsmithing & DIY Videos You Might Like

More from Forgotten Weapons

View all →