The Colt Open Top Pocket Model Revolver was a single action pocket revolver introduced by the Colt's Patent Fire Arms Manufacturing Company in 1871. Introduced a year before the Colt Open Top (a model from 1872) and two years before the Colt Peacemaker and the Colt New Line(both introduced in 1873), the Colt Open Top Pocket Model Revolver was, alongside the Colt House Revolver, one of the two first metallic cartridge rear-loading revolvers manufactured by Colt's. It also was one of the first pocket metallic cartridge revolvers made by the company.