AR-15/M16: The Rifle That Was Never Supposed to Be

Anytime a gun owner says the AR15 isnt an assault rifle or was never used in war show them this article.
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http://www.gundigest.com/article/the-ar-16m16-the-rifle-that-was-never-supposed-to-be

This article is an excerpt from the Gun Digest Book of Classic Combat Rifles.

IN MARCH OF 1965, the first U.S. troops landed in Vietnam. They were carrying the M14 rifle, chambered for the 7.62×51mm NATO (M80 Ball) cartridge, which had a detachable 20-round magazine and was capable of semi- and full-automatic fire. The military soon learned the M14 on full auto was extremely difficult to control; most burst fire was ineffective.
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The AR-15 made use of high-impact fibrite stocks, pistol grips and handguards. A selector lever on the left side of the rifle could be manipulated with the shooter’s right thumb without removing the hand from the pistol grip. The magazine release, on the right side of the receiver, could be operated with the trigger finger; when pressed, the magazine would drop free.

A fresh magazine, requiring no camming — or ‘rocking’ — could be inserted straight into the magazine well. This attribute contributed significantly to speedy reloading in combat situations compared to its closest rival, the AK47/AKM. These are two of the main reasons why the AR-15/M16-series rifles are considered the finest human-engineered assault rifles in the world.
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Fortunately, Defense Secretary McNamara was fond of the AR-15, knew the Ordnance Corps was dragging its feet on the weapon and on January 23, 1963, halted all procurements of the M14. Finally, in 1964, Defense Secretary McNamara ordered the Ordnance Corps to work with all branches of the armed forces to get the AR-15 ready for issue to all military personnel…one rifle for all branches. The Army purchased 100,000 rifles for issue to the Air Assault, Airborne, Ranger and Special Forces units.

After the AR15 — now, the M16 rifle — went into circulation, more was learned about how to improve the rifle. The rifling twist was changed from 1:14 inches to 1:12 inches. The Army wanted a manual bolt closure device added so, if the bolt failed to lock, it could be manually closed — and the forward assist assembly was born. The firing pin was lightened to prevent slam-fires (caused by the inertia of the firing pin when the bolt closed on a round). The buffer was changed from the original hollow version to one with weights in it to prevent the bolt from bouncing back when it slammed into the barrel extension.

On November 4, 1963, Colt was awarded a contract worth $13.5 million dollars for the procurement of 104,000 rifles … the legendary “One Time Buy.” Of those rifles, 19,000 were M16s for the Air Force and 85,000 were the XM16E1 (with the bolt closure device/forward assist assembly) for the Army and Marines. The XM16E1 was adopted as the M16A1 rifle. Steps were taken to procure ammunition.

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