Stemple 76/45 + Russian Lend-Lease Thompson Kit = STG-M1A

Published on November 25, 2025
Duration: 1:03

The STG-M1A is a unique firearm that legally functions as a Stemple 76/45 while visually mimicking a Thompson submachine gun. It achieves this by housing an unmodified Stemple receiver tube within a custom-built Thompson-style receiver housing. This build offers the aesthetic and ergonomics of a classic Thompson at a lower cost and with less wear on rare original parts.

Quick Summary

The STG-M1A is a custom firearm legally classified as a Stemple 76/45, built to visually resemble a Thompson submachine gun. It uses an unmodified Stemple receiver tube within a Thompson-style housing, offering the classic look at a lower cost and preserving rare original Thompson parts.

Chapters

  1. 00:00Introduction to the STG-M1A
  2. 00:12Mechanical Design and Construction
  3. 00:34Disassembly and Components
  4. 00:46Benefits and Value Proposition

Frequently Asked Questions

What is the STG-M1A firearm?

The STG-M1A is a custom firearm that legally functions as a Stemple 76/45 but is built to visually resemble a Thompson submachine gun. It achieves this by using an unmodified Stemple receiver tube inside a Thompson-style housing.

How does the STG-M1A differ legally from a Thompson?

Legally, the STG-M1A is classified as a Stemple 76/45 because its core serialized component is the Stemple receiver tube. This distinction allows it to bypass the higher costs and regulations associated with transferable Thompson submachine guns.

What are the advantages of the STG-M1A build?

The STG-M1A offers the iconic look and feel of a Thompson at a lower cost. It also preserves rare original Thompson parts by using a more durable and replaceable Stemple receiver, reducing wear and tear on valuable components.

What components are used in the STG-M1A?

The STG-M1A uses a standard, unmodified Stemple 76/45 round receiver tube as its serialized part. This is housed within a custom-designed receiver box that mimics the appearance of a Thompson, and it utilizes a standard Thompson lower receiver.

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