The Model 1877 was offered in three calibers, which lent them three unofficial names: the .38 Long Colt "Lightning", the .41 Colt "Thunderer", and the .32 Colt "Rainmaker".
Модель 1877 пропонувала в трьох калібрах, за що отримали три неофіційні назви: .38 Long Colt "Lightning", .41 Colt "Thunderer" та .32 Colt "Rainmaker".