modal30The Oldsmobile Model 30, which continued to be known as the Oldsmobile Six, was a motorcar built by General Motors from 1923 through 1927. Each year it was built, it was given aModel 30 Express. Description: Bolt Action rifle Introduction Year: 1926 Year Discontinued: 1940 Total Production:Approximately: 22,800 DesnerInventor: C.H. Barnes