RIA has a great little article up about the development of the M1911.
The famous 1911 pistol is one of the most popular handguns of all time. When it comes to factors like balance, comfort, and reliability, John Browning’s 1911 design has no shortage of admirers. The legendary pistol was eventually adopted by the U.S. Army and went on to become the longest-serving sidearm in American military history, but the 1911’s road to success as a military handgun included numerous early models and experimentation as Browning raced to develop a pistol that would standout against a slew of competitors.
The U.S. Military’s search for a reliable semi-automatic sidearm was a primary driver in the development of John Moses Browning’s .45-caliber pistol. Many of the evolutionary predecessors to the Colt 1911 are rare guns today, with especially scarce examples like the Colt Model 1910 prototype trials pistol considered gun collecting treasures. The Colt 1910 was a significant milestone in the progression of the 1911 design, but the real story begins over a decade earlier.
he rest at the link below