The airsoft Calico in the 1980s was made by two Japanese companies, the first one is MGC, and the second one is Toy-Tec with the Calico M100 as shown by Explosive Enterprises... "An overview of a classic piece of airsoft history, Toy-Tec's Calico M100 pistol. This is an externally-powered (originally refrigerant gas, but nowadays more easily CO2 or HPA), mostly-plastic replica with an exceptionally complex fire control mechanism but surprisingly sophisticated capabilities for a 1980s airsoft gun.