In 1911, which groundbreaking Colt firearm was adopted as the official sidearm of the U.S. Armed Forces, becoming one of the longest-serving military handguns in world history?

In the realm of military history, certain manufacturers have shaped the course of warfare through their revolutionary products. The Colt Manufacturing Company stands as one of the most influential firearms producers in history, with products that changed battlefields worldwide. This trivia question explores a pivotal moment in Colt's product history that had significant implications for military forces globally.

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Colt M1911 (Colt Government Model)
Colt Single Action Army (Peacemaker)
Colt Python .357 Magnum
Colt Walker Revolver