ordered Secretary of the Army Cyrus Vance to reevaluate the M-14, the AR-15, and the AK. Even President Kennedy got involved, demanding that the situation be cleared up once and for all. Time was of the essence. By October 1962, the United States had committed more than ten thousand advisors to Vietnam without the best available weapon and it was clear that many more troops would be on their way to fight the Communist threat from the north.
Ensuing tests did not prove the anecdotal stories received from the battlefield about the AR-15’s superiority, and charges flew around the highest levels of government about rigged tests designed to make the new weapon look inferior. Ironically, one test showed that the AK had significantly fewer malfunctions than all other weapons (there were some disagreements here, too), but several findings were irrefutable: the AR-15 was lighter, infantrymen could carry more of its ammunition, it was cheaper than the M-14, and it could be produced quickly.
McNamara decided to kill production of the M-14 by 1963 and begin production of the AR-15. He ordered eighty-five thousand AR-15s for the army and nineteen thousand for the air force. Opponents argued that his decision was based on bottom-line numbers—cheaper per unit costs and fast production—but his word was final nonetheless.
Whatever his reason, McNamara was clearly angry at the way Ordnance had handled the entire matter; several years earlier he had called the M-14 project a “disgrace” during public hearings. In congressional testimony he said, “It is a relatively simple job to build a rifle, compared to building a satellite.” In McNamara’s shakeup of the Ordnance bureaucracy, the name was changed to the U.S. Army Materiel Command, and Carten found himself transferred from the Springfield Armory to the army’s Rock Island Arsenal in Illinois.
The Springfield Armory also took heat for its complicity in the M-14 affair. For the first time, an outside vendor, Colt, was going to be the lead supplier of the army’s main weapon, now officially designated as the M-16. It used a .223-caliber cartridge with the military-metric designation of 5.56 × 45mm.
McNamara got even tougher and demanded that all branches of the military work together on modifying the M-16 for full-scale production and battle-readiness. Again, however, he found himself frustrated by the military bureaucracy’s inability to move quickly and decisively. McNamara was used to giving orders at Ford and having them followed immediately and exactly, and he soon found himself at odds with career military personnel as well as civil servants who resisted the new businesslike regime. Government, especially the military establishment, did not work that way. The process was slow, arduous, and contentious. Turf battles continued as various departments micromanaged the project to protect their interests and support their beliefs.
SEVERAL EVENTS IN 1963 PUSHED McNamara for an even faster resolution. In January, the South Vietnamese army, equipped with M-14s, was defeated at Ap Bac by Vietcong carrying AKs. The reports of this automatic weapon’s devastating effects worried U.S. commanders. It was becoming clear that an automatic weapon was crucial for winning in Vietnam because of a new pattern of warfare starting to emerge. Confrontations often consisted of what were termed “meeting engagements,” in which jungle patrols from both sides found themselves unexpectedly face-to-face, and the side that could pump out the most rounds in the shortest amount of time won the skirmish. The M-14 was no match for the AK in these close-quarter encounters.
Again, U.S. military planners were caught unprepared for a different kind of warfare that took place in dense jungles against an enemy that you could not track in advance. Superior airpower was often ineffective, so battles would come down to the infantryman carrying the best weapon for the
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