This clip is part of the Texas Talks with the State Historian of Texas Bill O'Neal titled Gunslingers in Texas. The Evolution of Early "Six Shooter" Technology O'Neal discusses the weaponry during the Mexican War with the 6 shooter pistols. The US military using these guns had more firepower than anyone in the world and demonstrated that in the conflict. O'Neal discusses the 1851 Navy Colt and the 1858 Remington 44 caliber, which were two of the most popular Civil War guns. He also discusses the 1871 Colt revolver 6 shooter and the fast-draw scenarios that developed thereafter.