When the M16 rifle was first introduced to U.S. troops during the Vietnam War, what major product issue led to widespread criticism and eventual congressional investigation?

The introduction of the M16 rifle represented a significant product launch in military history that changed modern warfare. Originally designed by Eugene Stoner in the late 1950s, this lightweight assault rifle with its high-velocity 5.56mm ammunition marked a dramatic shift from traditional heavy battle rifles. This poll tests your knowledge about this iconic product launch that transformed military equipment standards worldwide and influenced combat tactics for decades to come.

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Jamming due to powder fouling issues and lack of proper cleaning instructions
Excessive weight making it difficult for soldiers to carry during long patrols
Limited range compared to the AK-47 used by enemy forces
Plastic components melting in the tropical heat of Vietnam