COGC was founded in 1955. It was originally located between what is now the Twin Peaks Motel and Box Canyon Motel at the far south end of Ouray. At that time, COGC had one long building where only hand guns could be used in the indoor range. In September of 1989, the property where COGC sat was sold to the Box Canyon Motel, and COGC bought five acres where it is now located off Hwy 550 across from Orvis Hot Springs south of Ridgway.