Edited sentence: However the publicity helped commercial sales and set the stage for the more acceptable Model 59 with it's high capacity magazine at least in undercover or detective police use where the DA feature (and the larger magazine capacity) was considered by many to be superior to the SA 1911 Colt Commander, the primary competition.The Illinois state police adopted the Model 39 in 1967, an action which helped automatic pistols break the ice with law enforcement, but the 9MM parabellum cartridge just could not provide the stopping power needed and it was eventually discarded