The Hammond Bulldog pistol had a swivel breech block which could be opened and the rimfire cartridge could be inserted and the pistol was ready to fire by cocking the hammer and pulling the trigger. Some varients including derringer versions and larger hand held pistols, many were either blued or nickel plated with wooden or rubber checkered grips. Approximately 7,400 of these single shot pistols were made until 1868 when production ended due to due to a defaulted mortgage.