Which famous military product was first marketed to the U.S. Army in 1911 using the innovative sales strategy of having its inventor fire it into a water bucket to demonstrate its reliability?

Throughout history, certain military products and innovations have dramatically altered the course of warfare. These famous products often represented technological breakthroughs that gave one side a decisive advantage or changed military doctrine forever. This trivia question focuses on how these revolutionary products were marketed and introduced to military leadership - an often overlooked aspect of military procurement history.

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The M1911 Colt pistol designed by John Browning
The Thompson submachine gun (Tommy Gun)
The Browning Automatic Rifle (BAR)
The Springfield M1903 rifle