Month: May 2023

M16 Development And The Cold Weather Controversy

One of the lesser-known controversies with the M16 development program began in May 1962 when an article in American Rifleman magazine stated that the M16 was not accurate in cold weather.

While reading the book “The M16 Controversies” I came across this information:

“Formal tests in a “cold chamber” at Eglin Air Force Base early in 1963 finally verified the existence of “a severe stability problem” as temperatures approached minus 65 degrees Fahrenheit.”

Eugene Stoner’s original design of the AR-15 had a 1 turn in 14 inches rifling. The result of this finding lead to the recommendation to change the rifling to 1 turn in 12 inches in order to make the bullet spin more and improve bullet stability at low temperatures.

The thing that is absurd about the tests and criticism of bullet performance at minus 65 degrees is that a soldier cannot even function at minus 65 degrees. It is stated ( that the lowest temperature at which a human can survive is around minus 21 degrees Fahrenheit. Below that, the human body loses heat faster than it can produce it.

You can read the original article in the May 1962 issue of American Rifleman magazine which created this cold weather controversy at this link:

Colt SCW Stocks Now Available

From Arms Unlimited promotional post…

“For the first time ever, a true side folding stock for your AR15 engineered by Colt! The Colt SCW (Sub Compact Weapon) side folding stock is a complete conversion kit that utilizes a Colt designed sub-compact receiver extension, buffer and bolt carrier group that is capable of firing reliably in semi-auto and full-auto, even when folded. This stock system is ideal for operating in and around vehicles, or when extreme concealment is a necessity. The Colt SCW complete conversion kit was engineered and developed by Colt to military standards and is the only side folding system for AR15 type weapons platforms that has passed military testing standards. Compatible with all mil-spec AR15/M4 direct impingment weapon systems.”

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