Which military product's successful marketing campaign included a dramatic 1862 demonstration where its inventor personally fired at a target while President Lincoln observed, leading to widespread adoption?

Throughout military history, product design and marketing have played crucial roles in weapon adoption and military contracts. From catapults to aircraft carriers, military equipment represents some of the most innovative product development in history. This trivia question examines how one revolutionary product design changed warfare through effective marketing and demonstrations that convinced military leaders to adopt new technology.

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The Gatling Gun, demonstrated by Richard Gatling
The Spencer Repeating Rifle, demonstrated by Christopher Spencer
The Colt Navy Revolver, demonstrated by Samuel Colt
The Henry Rifle, demonstrated by Benjamin Tyler Henry