What Happened with the M16 in Vietnam?

Published on June 6, 2018
Duration: 55:41

This video meticulously details the M16's troubled introduction in Vietnam, tracing issues from early design flaws and procurement politics to ammunition choices. It highlights how non-chrome chambers, incorrect twist rates, and the switch to ball powder exacerbated reliability problems, contrasting with the later M16A1's successful fixes like chrome lining and proper maintenance.

Quick Summary

The M16's initial failures in Vietnam stemmed from political procurement decisions and technical oversights, notably the lack of chrome-lined chambers and bores, which caused corrosion and extraction issues. A switch to ball powder also increased the cyclic rate, leading to malfunctions. These problems were eventually resolved with the M16A1's improvements.

Chapters

  1. 00:00Intro: M16 Vietnam Misinformation
  2. 03:06M14 Unsuitability & Colt's Role
  3. 09:22Early Model 01 Features & Flaws
  4. 12:57Chrome Lining & Twist Rate Issues
  5. 16:43XM16E1 & Forward Assist Debate
  6. 20:09Ammunition: Ball Powder Scandal
  7. 24:52Maintenance Myths & M16A1 Solutions

Frequently Asked Questions

What were the main reasons for the M16's initial reliability problems in Vietnam?

The M16 faced issues due to the Army's decision not to chrome-line chambers and bores, leading to corrosion and extraction failures. Additionally, a switch to ball powder increased the cyclic rate, causing malfunctions. Neglect in maintenance, fueled by a 'self-cleaning' myth, further compounded these problems.

How did the M16 evolve from the AR-15 to the M16A1?

The AR-15 rights were sold to Colt, leading to the Model 01. The Army's XM16E1 added a forward assist, which Stoner opposed. The M16A1 standardized improvements like chrome bores, better aluminum receivers (7075 T6), weighted buffers, and proper cleaning kits, resolving the critical reliability issues.

What impact did the ammunition change have on the M16's performance?

The Army's switch from IMR powder to ball powder increased the M16's cyclic rate from 750 to over 1,000 RPM. This accelerated wear, caused parts breakage (like disconnectors and bolts), and led to 'bolt carrier bounce,' resulting in light primer strikes, especially in full-auto fire.

Why was the M14 considered unsuitable for Vietnam, leading to the M16's adoption?

The M14's heavier caliber and full-size rifle were less effective in the close-quarters jungle warfare of Vietnam compared to the AK-47. The M16, with its lighter weight and smaller caliber, was seen as a more suitable replacement for infantry in that environment.

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