Which military technology product launch included a famous demonstration where the inventor personally wore his creation while being shot at to prove its effectiveness?

Throughout military history, certain product launches have revolutionized warfare and captured public imagination. These strategic introductions often involved sophisticated marketing campaigns that helped shape both military adoption and civilian perception. This trivia question explores one of the most influential military product launches that changed the course of combat technology and featured innovative marketing techniques for its era.

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Samuel Colt's revolver (1836)
Hiram Maxim's machine gun (1884)
Casimir Zeglen's silk bulletproof vest (1893)
John Browning's automatic pistol (1911)