1825 ca. - Percussion-cap guns are in general use. 1830 - The back action lock appears. 1835 - The first Colt revolver. Samuel Colt developed the first mass-produced, multi-shot, revolving firearms.

In 2020, Colt reintroduced its iconic Python revolver, but the initial guns were made from stainless steel and had a polished finish. Many Colt fans clamored for another version with a blued ...