3D Animation: How a COP .357 Derringer works

The COP .357 is a 4-shot Derringer-type pistol chambered for the .357 Magnum cartridge, designed in 1983 by Robert Hillberg. It was manufactured by the now defunct American gun manufacturer COP (“Compact Off-Duty Police“) from 1983 until 1990 and in 1990 for a short time by American Derringer. Each of the four chambers has its own dedicated firing pin. It uses an internal hammer and a rotating striker that hits one firing pin at a time. Check out our Posters & T-Shirts at If you like this video, please think about supporting us on Patreon: If you want to buy me a coffee, I appreciate it, thanks! Music: Summon the Rawk, The Descent and Five Armies by Kevin MacLeod () 3D Animation done using: