The Casull is a classical semiautomatic handgun, based on pre WWII handgun designs by Colt, most notably Colt's popular handguns, the M1911 and the M1903. It is approximately 39cm in length (being depicted to be about the same length as the Jackal), weighting approximately 6 kg unloaded and bears a six plus one shot magazine of the .454 Casull caliber that gave the gun its name.