In the Vietnam War, while North Vietnamese forces were equipped with the AK-47, a reliable assault rifle, US forces introduced the M16, which was advanced but had serious flaws. The M16 frequently jammed in combat, leading to fatal consequences for US soldiers. A public scandal emerged, resulting in a Congressional investigation revealing the M16’s deficiencies. To address the issue, the US Army produced a comic book manual by artist Will Eisner to guide soldiers on maintaining the M16.
  

Key Points: 

1. The AK-47, provided to North Vietnamese forces, was a dependable rifle, while the US’s M16 had numerous malfunctions in the field.
2. Many US soldiers lost their lives due to the M16’s frequent jamming during combat.
3. Congressional investigations identified problems with the M16, including faulty ammunition powder and a frail magazine design.
4. Despite its issues, military leaders defended the M16, even when the enemy left behind the “worthless” rifles after engagements.
5. To address the M16’s issues, the US Army distributed a comic book-style manual on its maintenance, created by famed artist Will Eisner.

Source: https://books.worksinprogress.co/book/maintenance-of-everything/vehicles/digression-2-from-manuals-to-youtube-with-a-detour-two-assault-rifles/2?ref=thebrowser.com