20. The Stopgap M14 Rifle
When the M14 first saw action in Vietnam, significant drawbacks emerged. For one, while the rifle was a stable and accurate platform when it fired single rounds in semiautomatic mode, it was virtually uncontrollable when it was fired in full auto mode. For another, while its 7.62mm NATO rounds were more powerful and could reach farther than the rounds of the AK-47 wielded by the American GIs’ opponents, the M14’s cartridges were heavier. That weight meant that M14 users could carry fewer bullets, pound for pound, than did adversaries who wielded AK-47.
Worse, the disadvantages caused by the heavier weight were not balanced out by practical advantages. In most encounters in Vietnam, the M-14 rifle’s longer-range was seldom needed. There were relatively few wide open fields of fire, and the rugged terrain and vegetation meant that most engagements took place at short to medium distances. Being able to shoot somebody at 500 yards, which the M-14 could reliably do with iron sights (and at 900 yards or more with a scope), was little help to American troops who seldom saw an enemy beyond 100 or 200 yards.