Lever-Delayed Prototype SMG: The MAS Mle 1948 Series

Published on September 20, 2023
Duration: 21:18

The MAS Mle 1948 series explored lever-delayed blowback as a precursor to the FAMAS. Prototypes like the Type C3 featured innovative folding magazine wells and top-mounted charging handles. Despite good field performance, its complexity led to the adoption of the simpler MAT-49.

Quick Summary

The MAS Mle 1948 series utilized a lever-delayed blowback mechanism, a precursor to the FAMAS system. This design involved a lever acting on the bolt to slow cycling. While innovative and tested in field conditions, its manufacturing complexity and cost led to its rejection in favor of the simpler MAT-49 SMG.

Chapters

  1. 00:00Introduction: Post-WWII French SMG Needs
  2. 02:03MAS 1948 Type C3 Prototype Overview
  3. 04:28Disassembly and Internal Components
  4. 05:40Lever-Delayed Blowback Mechanism Explained
  5. 08:51Type E and Type C4 Variants
  6. 11:12Pre-Production and Field Trials in Indo-China
  7. 13:33Long Barrel & Fixed Stock Variant
  8. 15:13Conclusion: Why the MAT-49 Was Adopted

Frequently Asked Questions

What was the purpose of the MAS Mle 1948 series?

The MAS Mle 1948 series was developed by the French army after WWII to find a new 9mm Parabellum submachine gun to replace the older MAS-38. Several arsenals worked on designs, with MAS focusing on delayed blowback systems.

What is the lever-delayed blowback mechanism used in the MAS 1948?

The lever-delayed blowback system uses a lug on the bolt that acts as a lever against the receiver. This requires rearward pressure to first move a heavy bolt element via the lever before the entire bolt can cycle, slowing the action.

What were some notable features of the MAS Mle 1948 prototypes?

Early prototypes like the Type C3 featured a folding magazine well, a top-left non-reciprocating charging handle, and a grip safety. Later variants improved ergonomics and stock designs.

Why was the MAS Mle 1948 ultimately not adopted by the French army?

Despite performing well in field tests, the MAS 1948's lever-delayed mechanism was more complex and expensive to manufacture than simpler blowback designs. The French army chose the more cost-effective MAT-49.

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