The story of the single action revolver began the day the Alamo fell in 1836. Thats when Samuel Colt began production of a revolving-cylinder pistol at his Paterson, New Jersey, factory. The firearm was enthusiastically received by the Rangers of the newly independent Republic of Texas. And in 1844, the single actions made history when sixteen Rangers held off eighty Comanche warriors with their new Colt revolvers. One of those Rangers was Sam Walker. So in 1846, when war with Mexico was looming and Walkers Mounted Rifles needed powerful handguns for action on horseback, Walker ordered 1,000 improved Colt revolvers. The Walker model held 60 grains of black powder and chambered six, .44-caliber balls. The massive fire-power needed a much stronger frame and a larger design than earlier models. The Walkers were 15-3/4" long and weighed nearly four and a half pounds. The reputation of the formidable Walker black powder firearms ensured Colts success.